Jackpot 2 LS
A complete standalone ECU, wiring harness, and sensor package designed to control LS-based engine swaps without relying on the factory ECU.
Fully tunable with self-learning fuel control, Jackpot 2 LS gives builders the flexibility to get running quickly and fine-tune deeper when they’re ready.
Jackpot 2 LS EFI System - Master Kit with Command Center 2 Surge Tank
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The Jackpot 2 LS kits are designed to be compatible with 1997-2014 GM Gen III & Gen IV LS based engines that use either a 58x/4x or a 24x/1x crank & cam pattern. Common compatible engines include LS1, LS2, LS3, LS6, LS7, LS9, and many popular LS swap variants such as 4.8L, 5.3L, and 6.0L LS-based engines. Compatibility is determined by the trigger pattern and engine features, not just the engine nickname, so confirming the crank and cam pattern is one of the best ways to validate fitment.
Jackpot 2 LS EFI System
Modern EFI control built for real-world LS swaps.
The Jackpot 2 LS EFI System is a standalone engine management system for 1997–2014 GM Gen III and Gen IV LS-based engines that use 58x/4x or 24x/1x crank and cam trigger patterns. It’s perfect for LS swaps or for upgrading and replacing your factory ECU or existing aftermarket EFI, giving you modern sequential fuel and spark control, dual wideband closed-loop learning, and the flexibility to support everything from stock street builds to serious high-performance combinations.
Jackpot 2 LS is designed for builders who want the best of both worlds: a simple, guided setup that gets you running fast, plus true standalone ECU control that scales up to advanced tuning when your build demands it. Whether you are swapping a 5.3 into a classic truck, refreshing an LS3 street car, or building a track-focused combo with aggressive cam timing and power adders, Jackpot 2 LS is built to keep the install clean, the drivability strong, and the control in your hands.
At the heart of the system is Aces’ 32-bit automotive-grade ECU architecture, built for stable RPM control, reliable input and output handling, and consistent performance across changing voltage and load conditions. For stock and mild builds, the setup wizard and self-learning fueling strategy help eliminate the intimidation factor of tuning. For serious performance builds, the free Aces laptop tuning software unlocks full manual control and calibration refinement.
Gen 2 Platform Advantages
Jackpot 2 LS is built on Aces’ Gen 2 ECU platform, which is a major step forward from the original Gen 1 Jackpot. The biggest upgrade is table resolution. Gen 1 used 10×14 fuel, ignition, and self-learn tables, while Gen 2 uses 31×31 tables. That higher-resolution mapping gives the ECU significantly more load and RPM “cells” to work with, which helps deliver smoother transitions, more stable drivability, and more precise control as conditions change.
Gen 2 also takes better advantage of dual wideband feedback. Because the system uses two wideband O₂ sensors (one per bank), it can manage learning and closed-loop correction on both banks with greater precision. This matters in real swaps where bank-to-bank differences can exist due to exhaust layout, injector variance, cylinder balance, or other mechanical variables.
Beyond mapping resolution, Gen 2 adds capability for swap-friendly features and future expansion. The updated chipset supports the increased table density, includes a dedicated fuel level input (configurable through the handheld or app), and the ECU is boost-control ready at the hardware level (software activation coming via a free update in Spring of 2026).
Gen 2 isn’t just higher table resolution; it’s a stronger control platform overall. The ECU includes expanded memory for more advanced strategies, faster internal processing, and improved sensor acquisition designed to deliver cleaner, more stable data under real-world electrical noise. Gen 2 also uses DMA-based ADC sampling for more consistent sensor readings, enhanced interrupt handling for faster response to changing engine conditions, and expanded timer functions for greater precision on timing-critical events.
What It Is
Jackpot 2 LS is a standalone ECU system that replaces the stock ECU and wire-harness or an existing aftermarket ECU & harness to control your LS engine’s fueling and ignition with modern wideband feedback and high-resolution mapping. It supports true sequential fuel and spark on compatible LS trigger patterns, closed-loop wideband control on both banks, and tunable strategies for performance features like nitrous and boosted combinations when configured correctly.
What It Fits
Jackpot 2 LS is intended for 1997–2014 GM Gen III and Gen IV LS-based engines that use either of the following crank and cam trigger combinations:
- 58x/4x crank and cam pattern
- 24x/1x crank and cam pattern
Common compatible engines include LS1, LS2, LS3, LS6, LS7, LS9, and many popular LS swap variants such as 4.8L, 5.3L, and 6.0L LS-based engines. Compatibility is determined by the trigger pattern and engine features, not just the engine nickname, so confirming the crank and cam pattern is one of the best ways to validate fitment.
Important Fitment Exclusions
This system is not intended to run active VVT or AFM/DOD applications. These must be removed/deleted if your engine currently has these features and you plan to run the Jackpot 2 LS system on it.
Choose Your System Version
Jackpot 2 LS is offered in four main configurations based on throttle type and whether you want ECU-based automatic transmission control.
Throttle Type
- Drive-by-Cable (DBC): Choose this if your throttle body uses a physical cable.
- Drive-by-Wire (DBW): Choose this if your throttle body is electronic and you have a compatible accelerator pedal.
Transmission Control
- Manual Transmission Version: For manual swaps or builds using a separate transmission controller.
- Transmission Control Version: For builds where you want the ECU to control a compatible GM automatic transmission.
Supported GM transmissions (Transmission Control versions only):
- 4L60E (1996-2003)
- 4L65E (1996-2003)
- 4L67E (1996-2003)
- 4L80E (1994-2003)
What’s Included With Every Standalone System
Every Jackpot 2 LS standalone system includes the core parts needed to run the engine and begin closed-loop learning, with options to match your build style.
Each standalone system comes with:
- The Jackpot 2 ECU
- A full LS wiring harness
- Your choice of either a handheld touchscreen or a Bluetooth module
- Two wideband O2 sensors (for dual bank wideband control)
- Two weld-in O2 sensor bungs
- A coolant temperature sensor
- A PDM (Power Distribution Module)
- A MAP sensor
- Additional accessories (installation and sensor-related items)
Harness details (important):
- Harness connector choice is EV1 or EV6 for standalone kits
- If you are buying a kit configuration that is not a standalone kit and comes with injectors, the harness and injectors are EV1 by default
- The harness always includes both 24x and 58x sub-harnesses, so you are covered for either trigger pattern supported by this system
Drive-by-Wire Compatibility (Approved Parts)
If you select a Drive-by-Wire version, use the approved throttle and pedal components below for proper compatibility.
Approved GM Throttle Bodies
- GM part number 12570800
- GM part number 12570790
- GM part number 12580760
- GM part number 12580195
- GM part number 12605109
- GM part number 12629992
Approved Throttle Pedal Assemblies
- GM part number 10379038
- Lokar part number BDBW-GM02
If you are unsure whether your throttle body or pedal matches these, confirm part numbers before purchasing so your DBW setup is plug-and-play.
What You Need for Most LS Swaps
Fuel System Requirements
The Jackpot 2 LS system operates between 43-60 PSI fuel pressure. Many LS setups run near 58 PSI nominal. Your pump, regulator strategy, and fuel plumbing must be capable of maintaining stable pressure under load. While the system is set up for pump gas by default, it can be set up to run E85 via the free PC tuning software.
Note: The system does not support flex fuel, and using ethanol-based fuels may decrease the longevity of certain components.
Exhaust Weld-in Bung Installation (for O2 sensors)
Dual wideband control requires proper sensor placement. You will need the included wideband bungs installed correctly, and the exhaust must be leak-free near the sensors to ensure accurate readings and stable learning behavior. Refer to the manual for proper installation instructions.
Electrical and Grounding
As with any standalone ECU, clean power and solid grounds are essential. Many drivability and sensor issues are caused by poor grounding, voltage drop, or noisy electrical systems. The system comes with a PDM (Power Distribution Module) to help ensure proper grounding and provides a ground trigger output for your fuel pump and two additional outputs, which can be used for fans.
The PDM uses IGBT transistors in place of solid-state or electromechanical relays, which helps to filter bad transient voltage, ultimately providing greater protection for your electronics that are connected to the PDM.
If You’re Running Boost or Nitrous
Jackpot 2 LS supports boosted and nitrous-capable setups when configured correctly with appropriate sensors and tuning strategies. The system has the hardware for boost control solenoids, which will be unlocked via a future software update in Spring of 2026. This feature requires using the Advanced Tuning Software, which can be downloaded for free by visiting https://acesefi.com/pages/apps.
What It Supports (Aftermarket and Stock Compatibility)
Jackpot 2 LS is designed to work with common OEM and aftermarket LS swap components (excluding early LS sensors), as long as the combination fits the supported trigger patterns and does not require active VVT or AFM/DOD control.
Key Features at a Glance
- Dual wideband O₂ sensors with dual-bank closed-loop control and learning
- 8 injector drivers and 8 coil outputs for V8 sequential control
- Sequential fuel and spark with individual cylinder trims
- Boost and nitrous-capable strategies when configured correctly (boost-control hardware onboard; strategy availability depends on software/features enabled)
- 2.7-bar MAP sensor capability for enhanced applications when configured appropriately
- Dual knock sensor control for real-time safety and timing optimization
- Rev limiter and 2-stage limiter (launch control)
- Dual fan control outputs for swap-friendly cooling control
- Supports both 58x/4x and 24x/1x crank/cam trigger combinations
- Free laptop software for advanced manual tuning and calibration refinement
- Seamless integration with Aces accessories (handhelds, digital dashes, CAN modules, and transmission control solutions where applicable)
Engineered Hardware and Electrical Protection
Jackpot 2 LS uses a cast aluminum ECU housing to improve heat dissipation and help shield the electronics from RFI/EMI interference, important on swaps where wiring routes, ignition components, and chassis grounding can vary widely. The system is designed with robust OEM-style electrical protection and stable power handling so the ECU and connected components stay consistent across changing voltage and load conditions.
Gen 2 hardware is also future-ready, with provisions for feature expansion such as additional relay/trigger-style control functionality as firmware support is released.
Fuel and Spark Control
The system supports sequential fuel and spark control on compatible LS trigger patterns, dual bank wideband closed-loop fueling, and high-resolution mapping for smoother drivability and stronger control under load. It includes features that matter for both street and performance builds, including cylinder trim capability, rev limiting, and safety strategies.
Ignition Compatibility
Jackpot 2 LS is built for precision ignition control and supports 58x/4x and 24x/1x configurations for true sequential control. It is compatible with most stock coils (except early LS1 coils due to connector differences), but for best results, we recommend using Aces’ AC2011 coil packs.
Injector Compatibility
Standalone harnesses are available in EV1 or EV6 connector formats. Injector selection should match your horsepower goal and fuel type. The Jackpot 2 LS is compatible with high-impedance injectors (only) and supports 8 injectors, up to 210 lb/hr.
Cooling Fan Control and Outputs
The system supports dual fan control and swap-friendly outputs for clean integration into a variety of chassis.
Dash and Gauge Integration
Jackpot 2 LS is designed to support common swap gauge strategies and Aces integration accessories, with handheld monitoring and optional app connectivity depending on configuration.
Fuel Level Input (Gen 2)
Gen 2 adds a dedicated fuel level input so you can bring your tank sender signal into the ECU and view fuel level directly on the handheld display or through the Aces Connect App when using the Bluetooth module. This is especially helpful on swaps where the factory ECU is removed, and the original cluster fuel signal is no longer being driven the same way.
Setup is handled through the handheld/app settings: connect the sender signal, select the appropriate configuration method, then calibrate and verify the reading (including optional smoothing/filtering if needed for stable real-world display). Once configured, you can monitor fuel level alongside key ECU data like RPM, speed, voltage, and sensor readings.
For factory gauges, most tachometers can be driven by the Jackpot 2 using a square-wave tach output. For broader gauge coverage, the included Aces handheld (or an optional Bluetooth module) can display tach, speed, battery voltage, fuel level, and other key sensor data. All Aces EFI systems are also compatible with Dakota Digital gauges using the Dakota Digital EFI BIM module.
Installation Expectations
Most installs can be completed in a little over a weekend when the fuel system plan is solid, wideband bungs are installed properly, and wiring is routed cleanly. More complex builds, such as transmission control setups, custom dash integrations, or high-power boosted combinations, will require additional time and setup.
A simple first-start checklist always helps: verify fuel pressure, verify grounds and voltage stability, confirm trigger pattern selection, confirm injector and ignition configuration, start and warm up, then allow closed-loop learning to begin.
Setup and Tuning Experience
Jackpot 2 LS is built to be approachable for first-time EFI builders without limiting experienced tuners.
Guided Setup (Handheld or Bluetooth)
After the install, initial setup is straightforward. Using the included handheld touchscreen (or the Bluetooth module if that’s the option you choose), you’ll run through the setup wizard and answer a few basic questions about your engine and configuration—things like cam type, ignition/timing setup, and other core inputs the ECU needs to start safely and learn correctly.
The wizard process is the same whether your build is stock or aggressive. Where the difference comes in is how far you rely on self-learning. Self-learning is intended for stock to mild combinations and is excellent for daily driving, cruising, and normal load transitions. Wide-open throttle pulls, dyno tuning, and higher-risk operation (especially with aggressive combinations or power adders) should be handled with manual tuning using the free laptop software.
The handheld or Bluetooth module is needed for initial setup, adjustments, and monitoring, but it does not need to remain plugged in once the system is configured and running correctly. Think of it as your setup and control interface: use it to configure, make changes, and view live sensor data whenever you want.
For stock and mild applications, the guided setup wizard and self-learning fueling strategy help deliver quick startup and strong drivability with minimal tuning complexity. Once the engine reaches operating temperature and transitions into closed loop, the system begins learning fueling in real time. After a few drive cycles, fueling accuracy and response continue to improve, and when you are satisfied with the results, you can lock the calibration.
For performance builds, the included USB cable and Aces’ free laptop tuning software give you full manual control, so you can confidently dial in aggressive cam profiles, power adders, and race-focused combinations with complete authority.
Takeaway
The Jackpot 2 LS EFI System is built for real swaps and real builders. It delivers fast guided setup for simple street builds and deep tuning capability for serious performance, while keeping compatibility and install requirements clear so you can buy confidently and build without surprises.
Bundle & save 5% automatically when you purchase a Fuel Kit, Top End Kit, or Master Kit!
1. Standalone Kits
Perfect if you already have a high-pressure fuel system (43 PSI+), a manifold, throttle body, and injectors for your LS or Hemi engine.
Includes the following:
- ECU
- Handheld or Bluetooth Module
- Full Harness
- Sensors
- Accessories
2. Fuel Kits
Perfect if you just need the engine management system and a fuel delivery system.
Includes the following:
- A complete Standalone Kit
- A Fuel Delivery System of your choosing
3. Top End Kits
Includes the following:
- A complete Standalone Kit
- An intake manifold of your choosing
- A throttle body of your choosing (options depend on the manifold)
- 8 injectors
4. Master Kits
Includes the following:
- A complete Standalone Kit
- A Fuel Delivery System of your choosing
- An intake manifold of your choosing
- A throttle body (options depend on the manifold)
- 8 injectors
Product Info
Overview
Jackpot 2 LS EFI System
Modern EFI control built for real-world LS swaps.
The Jackpot 2 LS EFI System is a standalone engine management system for 1997–2014 GM Gen III and Gen IV LS-based engines that use 58x/4x or 24x/1x crank and cam trigger patterns. It’s perfect for LS swaps or for upgrading and replacing your factory ECU or existing aftermarket EFI, giving you modern sequential fuel and spark control, dual wideband closed-loop learning, and the flexibility to support everything from stock street builds to serious high-performance combinations.
Jackpot 2 LS is designed for builders who want the best of both worlds: a simple, guided setup that gets you running fast, plus true standalone ECU control that scales up to advanced tuning when your build demands it. Whether you are swapping a 5.3 into a classic truck, refreshing an LS3 street car, or building a track-focused combo with aggressive cam timing and power adders, Jackpot 2 LS is built to keep the install clean, the drivability strong, and the control in your hands.
At the heart of the system is Aces’ 32-bit automotive-grade ECU architecture, built for stable RPM control, reliable input and output handling, and consistent performance across changing voltage and load conditions. For stock and mild builds, the setup wizard and self-learning fueling strategy help eliminate the intimidation factor of tuning. For serious performance builds, the free Aces laptop tuning software unlocks full manual control and calibration refinement.
Gen 2 Platform Advantages
Jackpot 2 LS is built on Aces’ Gen 2 ECU platform, which is a major step forward from the original Gen 1 Jackpot. The biggest upgrade is table resolution. Gen 1 used 10×14 fuel, ignition, and self-learn tables, while Gen 2 uses 31×31 tables. That higher-resolution mapping gives the ECU significantly more load and RPM “cells” to work with, which helps deliver smoother transitions, more stable drivability, and more precise control as conditions change.
Gen 2 also takes better advantage of dual wideband feedback. Because the system uses two wideband O₂ sensors (one per bank), it can manage learning and closed-loop correction on both banks with greater precision. This matters in real swaps where bank-to-bank differences can exist due to exhaust layout, injector variance, cylinder balance, or other mechanical variables.
Beyond mapping resolution, Gen 2 adds capability for swap-friendly features and future expansion. The updated chipset supports the increased table density, includes a dedicated fuel level input (configurable through the handheld or app), and the ECU is boost-control ready at the hardware level (software activation coming via a free update in Spring of 2026).
Gen 2 isn’t just higher table resolution; it’s a stronger control platform overall. The ECU includes expanded memory for more advanced strategies, faster internal processing, and improved sensor acquisition designed to deliver cleaner, more stable data under real-world electrical noise. Gen 2 also uses DMA-based ADC sampling for more consistent sensor readings, enhanced interrupt handling for faster response to changing engine conditions, and expanded timer functions for greater precision on timing-critical events.
What It Is
Jackpot 2 LS is a standalone ECU system that replaces the stock ECU and wire-harness or an existing aftermarket ECU & harness to control your LS engine’s fueling and ignition with modern wideband feedback and high-resolution mapping. It supports true sequential fuel and spark on compatible LS trigger patterns, closed-loop wideband control on both banks, and tunable strategies for performance features like nitrous and boosted combinations when configured correctly.
What It Fits
Jackpot 2 LS is intended for 1997–2014 GM Gen III and Gen IV LS-based engines that use either of the following crank and cam trigger combinations:
- 58x/4x crank and cam pattern
- 24x/1x crank and cam pattern
Common compatible engines include LS1, LS2, LS3, LS6, LS7, LS9, and many popular LS swap variants such as 4.8L, 5.3L, and 6.0L LS-based engines. Compatibility is determined by the trigger pattern and engine features, not just the engine nickname, so confirming the crank and cam pattern is one of the best ways to validate fitment.
Important Fitment Exclusions
This system is not intended to run active VVT or AFM/DOD applications. These must be removed/deleted if your engine currently has these features and you plan to run the Jackpot 2 LS system on it.
Choose Your System Version
Jackpot 2 LS is offered in four main configurations based on throttle type and whether you want ECU-based automatic transmission control.
Throttle Type
- Drive-by-Cable (DBC): Choose this if your throttle body uses a physical cable.
- Drive-by-Wire (DBW): Choose this if your throttle body is electronic and you have a compatible accelerator pedal.
Transmission Control
- Manual Transmission Version: For manual swaps or builds using a separate transmission controller.
- Transmission Control Version: For builds where you want the ECU to control a compatible GM automatic transmission.
Supported GM transmissions (Transmission Control versions only):
- 4L60E (1996-2003)
- 4L65E (1996-2003)
- 4L67E (1996-2003)
- 4L80E (1994-2003)
What’s Included With Every Standalone System
Every Jackpot 2 LS standalone system includes the core parts needed to run the engine and begin closed-loop learning, with options to match your build style.
Each standalone system comes with:
- The Jackpot 2 ECU
- A full LS wiring harness
- Your choice of either a handheld touchscreen or a Bluetooth module
- Two wideband O2 sensors (for dual bank wideband control)
- Two weld-in O2 sensor bungs
- A coolant temperature sensor
- A PDM (Power Distribution Module)
- A MAP sensor
- Additional accessories (installation and sensor-related items)
Harness details (important):
- Harness connector choice is EV1 or EV6 for standalone kits
- If you are buying a kit configuration that is not a standalone kit and comes with injectors, the harness and injectors are EV1 by default
- The harness always includes both 24x and 58x sub-harnesses, so you are covered for either trigger pattern supported by this system
Drive-by-Wire Compatibility (Approved Parts)
If you select a Drive-by-Wire version, use the approved throttle and pedal components below for proper compatibility.
Approved GM Throttle Bodies
- GM part number 12570800
- GM part number 12570790
- GM part number 12580760
- GM part number 12580195
- GM part number 12605109
- GM part number 12629992
Approved Throttle Pedal Assemblies
- GM part number 10379038
- Lokar part number BDBW-GM02
If you are unsure whether your throttle body or pedal matches these, confirm part numbers before purchasing so your DBW setup is plug-and-play.
What You Need for Most LS Swaps
Fuel System Requirements
The Jackpot 2 LS system operates between 43-60 PSI fuel pressure. Many LS setups run near 58 PSI nominal. Your pump, regulator strategy, and fuel plumbing must be capable of maintaining stable pressure under load. While the system is set up for pump gas by default, it can be set up to run E85 via the free PC tuning software.
Note: The system does not support flex fuel, and using ethanol-based fuels may decrease the longevity of certain components.
Exhaust Weld-in Bung Installation (for O2 sensors)
Dual wideband control requires proper sensor placement. You will need the included wideband bungs installed correctly, and the exhaust must be leak-free near the sensors to ensure accurate readings and stable learning behavior. Refer to the manual for proper installation instructions.
Electrical and Grounding
As with any standalone ECU, clean power and solid grounds are essential. Many drivability and sensor issues are caused by poor grounding, voltage drop, or noisy electrical systems. The system comes with a PDM (Power Distribution Module) to help ensure proper grounding and provides a ground trigger output for your fuel pump and two additional outputs, which can be used for fans.
The PDM uses IGBT transistors in place of solid-state or electromechanical relays, which helps to filter bad transient voltage, ultimately providing greater protection for your electronics that are connected to the PDM.
If You’re Running Boost or Nitrous
Jackpot 2 LS supports boosted and nitrous-capable setups when configured correctly with appropriate sensors and tuning strategies. The system has the hardware for boost control solenoids, which will be unlocked via a future software update in Spring of 2026. This feature requires using the Advanced Tuning Software, which can be downloaded for free by visiting https://acesefi.com/pages/apps.
What It Supports (Aftermarket and Stock Compatibility)
Jackpot 2 LS is designed to work with common OEM and aftermarket LS swap components (excluding early LS sensors), as long as the combination fits the supported trigger patterns and does not require active VVT or AFM/DOD control.
Key Features at a Glance
- Dual wideband O₂ sensors with dual-bank closed-loop control and learning
- 8 injector drivers and 8 coil outputs for V8 sequential control
- Sequential fuel and spark with individual cylinder trims
- Boost and nitrous-capable strategies when configured correctly (boost-control hardware onboard; strategy availability depends on software/features enabled)
- 2.7-bar MAP sensor capability for enhanced applications when configured appropriately
- Dual knock sensor control for real-time safety and timing optimization
- Rev limiter and 2-stage limiter (launch control)
- Dual fan control outputs for swap-friendly cooling control
- Supports both 58x/4x and 24x/1x crank/cam trigger combinations
- Free laptop software for advanced manual tuning and calibration refinement
- Seamless integration with Aces accessories (handhelds, digital dashes, CAN modules, and transmission control solutions where applicable)
Engineered Hardware and Electrical Protection
Jackpot 2 LS uses a cast aluminum ECU housing to improve heat dissipation and help shield the electronics from RFI/EMI interference, important on swaps where wiring routes, ignition components, and chassis grounding can vary widely. The system is designed with robust OEM-style electrical protection and stable power handling so the ECU and connected components stay consistent across changing voltage and load conditions.
Gen 2 hardware is also future-ready, with provisions for feature expansion such as additional relay/trigger-style control functionality as firmware support is released.
Fuel and Spark Control
The system supports sequential fuel and spark control on compatible LS trigger patterns, dual bank wideband closed-loop fueling, and high-resolution mapping for smoother drivability and stronger control under load. It includes features that matter for both street and performance builds, including cylinder trim capability, rev limiting, and safety strategies.
Ignition Compatibility
Jackpot 2 LS is built for precision ignition control and supports 58x/4x and 24x/1x configurations for true sequential control. It is compatible with most stock coils (except early LS1 coils due to connector differences), but for best results, we recommend using Aces’ AC2011 coil packs.
Injector Compatibility
Standalone harnesses are available in EV1 or EV6 connector formats. Injector selection should match your horsepower goal and fuel type. The Jackpot 2 LS is compatible with high-impedance injectors (only) and supports 8 injectors, up to 210 lb/hr.
Cooling Fan Control and Outputs
The system supports dual fan control and swap-friendly outputs for clean integration into a variety of chassis.
Dash and Gauge Integration
Jackpot 2 LS is designed to support common swap gauge strategies and Aces integration accessories, with handheld monitoring and optional app connectivity depending on configuration.
Fuel Level Input (Gen 2)
Gen 2 adds a dedicated fuel level input so you can bring your tank sender signal into the ECU and view fuel level directly on the handheld display or through the Aces Connect App when using the Bluetooth module. This is especially helpful on swaps where the factory ECU is removed, and the original cluster fuel signal is no longer being driven the same way.
Setup is handled through the handheld/app settings: connect the sender signal, select the appropriate configuration method, then calibrate and verify the reading (including optional smoothing/filtering if needed for stable real-world display). Once configured, you can monitor fuel level alongside key ECU data like RPM, speed, voltage, and sensor readings.
For factory gauges, most tachometers can be driven by the Jackpot 2 using a square-wave tach output. For broader gauge coverage, the included Aces handheld (or an optional Bluetooth module) can display tach, speed, battery voltage, fuel level, and other key sensor data. All Aces EFI systems are also compatible with Dakota Digital gauges using the Dakota Digital EFI BIM module.
Installation Expectations
Most installs can be completed in a little over a weekend when the fuel system plan is solid, wideband bungs are installed properly, and wiring is routed cleanly. More complex builds, such as transmission control setups, custom dash integrations, or high-power boosted combinations, will require additional time and setup.
A simple first-start checklist always helps: verify fuel pressure, verify grounds and voltage stability, confirm trigger pattern selection, confirm injector and ignition configuration, start and warm up, then allow closed-loop learning to begin.
Setup and Tuning Experience
Jackpot 2 LS is built to be approachable for first-time EFI builders without limiting experienced tuners.
Guided Setup (Handheld or Bluetooth)
After the install, initial setup is straightforward. Using the included handheld touchscreen (or the Bluetooth module if that’s the option you choose), you’ll run through the setup wizard and answer a few basic questions about your engine and configuration—things like cam type, ignition/timing setup, and other core inputs the ECU needs to start safely and learn correctly.
The wizard process is the same whether your build is stock or aggressive. Where the difference comes in is how far you rely on self-learning. Self-learning is intended for stock to mild combinations and is excellent for daily driving, cruising, and normal load transitions. Wide-open throttle pulls, dyno tuning, and higher-risk operation (especially with aggressive combinations or power adders) should be handled with manual tuning using the free laptop software.
The handheld or Bluetooth module is needed for initial setup, adjustments, and monitoring, but it does not need to remain plugged in once the system is configured and running correctly. Think of it as your setup and control interface: use it to configure, make changes, and view live sensor data whenever you want.
For stock and mild applications, the guided setup wizard and self-learning fueling strategy help deliver quick startup and strong drivability with minimal tuning complexity. Once the engine reaches operating temperature and transitions into closed loop, the system begins learning fueling in real time. After a few drive cycles, fueling accuracy and response continue to improve, and when you are satisfied with the results, you can lock the calibration.
For performance builds, the included USB cable and Aces’ free laptop tuning software give you full manual control, so you can confidently dial in aggressive cam profiles, power adders, and race-focused combinations with complete authority.
Takeaway
The Jackpot 2 LS EFI System is built for real swaps and real builders. It delivers fast guided setup for simple street builds and deep tuning capability for serious performance, while keeping compatibility and install requirements clear so you can buy confidently and build without surprises.
EFI System Specs
Jackpot 2 LS EFI System - Master Kit with Command Center 2 Surge Tank Specifications
| Specification | Value |
|---|---|
| Accelerometer Support | No |
| Boost Compatible | Yes |
| Boost Control | No, but the Gen 2 chips support it and this feature will be released in the Spring of 2026 |
| CAN-BUS Support | Yes |
| Coil Per Cylinder Ignition Support | Yes |
| Datalogging Support | Yes |
| DOD/AFM Compatible | No |
| Drive by Wire Compatible | Only select Jackpot 2 LS variants are compatible with DBW throttle bodies |
| Dry Nitrous Compatibility | No |
| Dry Nitrous Control | No |
| Supported Fuel Type(s) | Pump Gas (default setting) E85 (requires tuning) |
| EFI Type | Multi-Port |
| EGT Support | Yes |
| Emission Code | 3 |
| Forced Induction Support | Yes |
| Fuel Filter Included | Only in EFI Fuel Kits and Master Kits. |
| Fuel Hose Included | Only in EFI Fuel Kits, Top End Kits, and Master Kits. |
| Fuel Injectors Included | Only in EFI Fuel Kits, Top End Kits, and Master Kits. |
| Fuel Pressure Regulator Included | Only in EFI Fuel Kits and Master Kits. |
| Fuel Pump Included | Only in EFI Fuel Kits and Master Kits. |
| Grade Type | Performance |
| Handheld Included | In select variants |
| Idle Air Control Motor Included | Only in Top End and Master Kits. |
| Ignition Timing Control | Yes |
| Ignition Type | Coil Near Plug |
| Individual Cylinder Fuel Corrections | Yes |
| Injector Connector | Standalone kits give you the option of choosing between EV1 or EV6. Top End & Master Kits come with EV1. |
| Intake Manifold Included | Only in Top End and Master Kits. |
| Knock Retard Support | Yes |
| Engine Compatibility | 1997-2014 GM Gen III & Gen IV LS based engines that use either a 58x/4x or a 24x/1x crank & cam pattern. Common compatible engines include LS1, LS2, LS3, LS6, LS7, LS9, and many popular LS swap variants such as 4.8L, 5.3L, and 6.0L LS-based engines. Compatibility is determined by the trigger pattern and engine features, not just the engine nickname, so confirming the crank and cam pattern is one of the best ways to validate fitment. |
| MAP Sensor | 2.8 Bar |
| MAP Sensor Included | Yes |
| Mounting Hardware Included | Yes |
| Multi-Stage Nitrous Control | No |
| Nitrous Timing Retard | Yes |
| Progressive Nitrous Control | No |
| Self-Learning | Yes, for stock to mild builds |
| Sequential Injection | Yes |
| Throttle Position Sensor Included | Only in Top End and Master Kits. |
| Transmission Control | Select variants have GM 4-speed trans control. See chart at the bottom. |
| User-Tuneable | Yes |
| VVT Compatible | No |
Injector Specs
| Injectors | Rated Flow per Injector (lb/hr) | Rated Injector Pressure (psi) | Minimum Injector Opening Time (msec) | 8.0V | 8.8V | 9.6V | 10.4V | 11.2V | 12.0V | 12.8V | 13.6V | 14.4V | 15.2V | 16.0V | 16.8V | 17.6V | 18.4V | 19.2V | 20.0V |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 36 lb/hr (500 hp kits) | 36 | 43.5 | 1.544 | 2.157 | 1.648 | 1.323 | 1.03 | 0.857 | 0.741 | 0.646 | 0.542 | 0.478 | 0.418 | 0.345 | 0.302 | 0.256 | 0.224 | 0.19 | 0.156 |
| 65 lb/hr (800 hp kits) | 65 | 43.5 | 1.555 | 2.081 | 1.761 | 1.417 | 1.161 | 0.992 | 0.833 | 0.763 | 0.677 | 0.597 | 0.511 | 0.462 | 0.407 | 0.342 | 0.359 | 0.328 | 0.291 |
Resource Documents
For additional manuals, diagrams, measurements, and more, check out our documents page in our Resource Center by clicking here.
What's in the box?
Jackpot 2 LS EFI System
Modern EFI control built for real-world LS swaps.
The Jackpot 2 LS EFI System is a standalone engine management system for 1997–2014 GM Gen III and Gen IV LS-based engines that use 58x/4x or 24x/1x crank and cam trigger patterns. It’s perfect for LS swaps or for upgrading and replacing your factory ECU or existing aftermarket EFI, giving you modern sequential fuel and spark control, dual wideband closed-loop learning, and the flexibility to support everything from stock street builds to serious high-performance combinations.
Jackpot 2 LS is designed for builders who want the best of both worlds: a simple, guided setup that gets you running fast, plus true standalone ECU control that scales up to advanced tuning when your build demands it. Whether you are swapping a 5.3 into a classic truck, refreshing an LS3 street car, or building a track-focused combo with aggressive cam timing and power adders, Jackpot 2 LS is built to keep the install clean, the drivability strong, and the control in your hands.
At the heart of the system is Aces’ 32-bit automotive-grade ECU architecture, built for stable RPM control, reliable input and output handling, and consistent performance across changing voltage and load conditions. For stock and mild builds, the setup wizard and self-learning fueling strategy help eliminate the intimidation factor of tuning. For serious performance builds, the free Aces laptop tuning software unlocks full manual control and calibration refinement.
Gen 2 Platform Advantages
Jackpot 2 LS is built on Aces’ Gen 2 ECU platform, which is a major step forward from the original Gen 1 Jackpot. The biggest upgrade is table resolution. Gen 1 used 10×14 fuel, ignition, and self-learn tables, while Gen 2 uses 31×31 tables. That higher-resolution mapping gives the ECU significantly more load and RPM “cells” to work with, which helps deliver smoother transitions, more stable drivability, and more precise control as conditions change.
Gen 2 also takes better advantage of dual wideband feedback. Because the system uses two wideband O₂ sensors (one per bank), it can manage learning and closed-loop correction on both banks with greater precision. This matters in real swaps where bank-to-bank differences can exist due to exhaust layout, injector variance, cylinder balance, or other mechanical variables.
Beyond mapping resolution, Gen 2 adds capability for swap-friendly features and future expansion. The updated chipset supports the increased table density, includes a dedicated fuel level input (configurable through the handheld or app), and the ECU is boost-control ready at the hardware level (software activation coming via a free update in Spring of 2026).
Gen 2 isn’t just higher table resolution; it’s a stronger control platform overall. The ECU includes expanded memory for more advanced strategies, faster internal processing, and improved sensor acquisition designed to deliver cleaner, more stable data under real-world electrical noise. Gen 2 also uses DMA-based ADC sampling for more consistent sensor readings, enhanced interrupt handling for faster response to changing engine conditions, and expanded timer functions for greater precision on timing-critical events.
What It Is
Jackpot 2 LS is a standalone ECU system that replaces the stock ECU and wire-harness or an existing aftermarket ECU & harness to control your LS engine’s fueling and ignition with modern wideband feedback and high-resolution mapping. It supports true sequential fuel and spark on compatible LS trigger patterns, closed-loop wideband control on both banks, and tunable strategies for performance features like nitrous and boosted combinations when configured correctly.
What It Fits
Jackpot 2 LS is intended for 1997–2014 GM Gen III and Gen IV LS-based engines that use either of the following crank and cam trigger combinations:
- 58x/4x crank and cam pattern
- 24x/1x crank and cam pattern
Common compatible engines include LS1, LS2, LS3, LS6, LS7, LS9, and many popular LS swap variants such as 4.8L, 5.3L, and 6.0L LS-based engines. Compatibility is determined by the trigger pattern and engine features, not just the engine nickname, so confirming the crank and cam pattern is one of the best ways to validate fitment.
Important Fitment Exclusions
This system is not intended to run active VVT or AFM/DOD applications. These must be removed/deleted if your engine currently has these features and you plan to run the Jackpot 2 LS system on it.
Choose Your System Version
Jackpot 2 LS is offered in four main configurations based on throttle type and whether you want ECU-based automatic transmission control.
Throttle Type
- Drive-by-Cable (DBC): Choose this if your throttle body uses a physical cable.
- Drive-by-Wire (DBW): Choose this if your throttle body is electronic and you have a compatible accelerator pedal.
Transmission Control
- Manual Transmission Version: For manual swaps or builds using a separate transmission controller.
- Transmission Control Version: For builds where you want the ECU to control a compatible GM automatic transmission.
Supported GM transmissions (Transmission Control versions only):
- 4L60E (1996-2003)
- 4L65E (1996-2003)
- 4L67E (1996-2003)
- 4L80E (1994-2003)
What’s Included With Every Standalone System
Every Jackpot 2 LS standalone system includes the core parts needed to run the engine and begin closed-loop learning, with options to match your build style.
Each standalone system comes with:
- The Jackpot 2 ECU
- A full LS wiring harness
- Your choice of either a handheld touchscreen or a Bluetooth module
- Two wideband O2 sensors (for dual bank wideband control)
- Two weld-in O2 sensor bungs
- A coolant temperature sensor
- A PDM (Power Distribution Module)
- A MAP sensor
- Additional accessories (installation and sensor-related items)
Harness details (important):
- Harness connector choice is EV1 or EV6 for standalone kits
- If you are buying a kit configuration that is not a standalone kit and comes with injectors, the harness and injectors are EV1 by default
- The harness always includes both 24x and 58x sub-harnesses, so you are covered for either trigger pattern supported by this system
Drive-by-Wire Compatibility (Approved Parts)
If you select a Drive-by-Wire version, use the approved throttle and pedal components below for proper compatibility.
Approved GM Throttle Bodies
- GM part number 12570800
- GM part number 12570790
- GM part number 12580760
- GM part number 12580195
- GM part number 12605109
- GM part number 12629992
Approved Throttle Pedal Assemblies
- GM part number 10379038
- Lokar part number BDBW-GM02
If you are unsure whether your throttle body or pedal matches these, confirm part numbers before purchasing so your DBW setup is plug-and-play.
What You Need for Most LS Swaps
Fuel System Requirements
The Jackpot 2 LS system operates between 43-60 PSI fuel pressure. Many LS setups run near 58 PSI nominal. Your pump, regulator strategy, and fuel plumbing must be capable of maintaining stable pressure under load. While the system is set up for pump gas by default, it can be set up to run E85 via the free PC tuning software.
Note: The system does not support flex fuel, and using ethanol-based fuels may decrease the longevity of certain components.
Exhaust Weld-in Bung Installation (for O2 sensors)
Dual wideband control requires proper sensor placement. You will need the included wideband bungs installed correctly, and the exhaust must be leak-free near the sensors to ensure accurate readings and stable learning behavior. Refer to the manual for proper installation instructions.
Electrical and Grounding
As with any standalone ECU, clean power and solid grounds are essential. Many drivability and sensor issues are caused by poor grounding, voltage drop, or noisy electrical systems. The system comes with a PDM (Power Distribution Module) to help ensure proper grounding and provides a ground trigger output for your fuel pump and two additional outputs, which can be used for fans.
The PDM uses IGBT transistors in place of solid-state or electromechanical relays, which helps to filter bad transient voltage, ultimately providing greater protection for your electronics that are connected to the PDM.
If You’re Running Boost or Nitrous
Jackpot 2 LS supports boosted and nitrous-capable setups when configured correctly with appropriate sensors and tuning strategies. The system has the hardware for boost control solenoids, which will be unlocked via a future software update in Spring of 2026. This feature requires using the Advanced Tuning Software, which can be downloaded for free by visiting https://acesefi.com/pages/apps.
What It Supports (Aftermarket and Stock Compatibility)
Jackpot 2 LS is designed to work with common OEM and aftermarket LS swap components (excluding early LS sensors), as long as the combination fits the supported trigger patterns and does not require active VVT or AFM/DOD control.
Key Features at a Glance
- Dual wideband O₂ sensors with dual-bank closed-loop control and learning
- 8 injector drivers and 8 coil outputs for V8 sequential control
- Sequential fuel and spark with individual cylinder trims
- Boost and nitrous-capable strategies when configured correctly (boost-control hardware onboard; strategy availability depends on software/features enabled)
- 2.7-bar MAP sensor capability for enhanced applications when configured appropriately
- Dual knock sensor control for real-time safety and timing optimization
- Rev limiter and 2-stage limiter (launch control)
- Dual fan control outputs for swap-friendly cooling control
- Supports both 58x/4x and 24x/1x crank/cam trigger combinations
- Free laptop software for advanced manual tuning and calibration refinement
- Seamless integration with Aces accessories (handhelds, digital dashes, CAN modules, and transmission control solutions where applicable)
Engineered Hardware and Electrical Protection
Jackpot 2 LS uses a cast aluminum ECU housing to improve heat dissipation and help shield the electronics from RFI/EMI interference, important on swaps where wiring routes, ignition components, and chassis grounding can vary widely. The system is designed with robust OEM-style electrical protection and stable power handling so the ECU and connected components stay consistent across changing voltage and load conditions.
Gen 2 hardware is also future-ready, with provisions for feature expansion such as additional relay/trigger-style control functionality as firmware support is released.
Fuel and Spark Control
The system supports sequential fuel and spark control on compatible LS trigger patterns, dual bank wideband closed-loop fueling, and high-resolution mapping for smoother drivability and stronger control under load. It includes features that matter for both street and performance builds, including cylinder trim capability, rev limiting, and safety strategies.
Ignition Compatibility
Jackpot 2 LS is built for precision ignition control and supports 58x/4x and 24x/1x configurations for true sequential control. It is compatible with most stock coils (except early LS1 coils due to connector differences), but for best results, we recommend using Aces’ AC2011 coil packs.
Injector Compatibility
Standalone harnesses are available in EV1 or EV6 connector formats. Injector selection should match your horsepower goal and fuel type. The Jackpot 2 LS is compatible with high-impedance injectors (only) and supports 8 injectors, up to 210 lb/hr.
Cooling Fan Control and Outputs
The system supports dual fan control and swap-friendly outputs for clean integration into a variety of chassis.
Dash and Gauge Integration
Jackpot 2 LS is designed to support common swap gauge strategies and Aces integration accessories, with handheld monitoring and optional app connectivity depending on configuration.
Fuel Level Input (Gen 2)
Gen 2 adds a dedicated fuel level input so you can bring your tank sender signal into the ECU and view fuel level directly on the handheld display or through the Aces Connect App when using the Bluetooth module. This is especially helpful on swaps where the factory ECU is removed, and the original cluster fuel signal is no longer being driven the same way.
Setup is handled through the handheld/app settings: connect the sender signal, select the appropriate configuration method, then calibrate and verify the reading (including optional smoothing/filtering if needed for stable real-world display). Once configured, you can monitor fuel level alongside key ECU data like RPM, speed, voltage, and sensor readings.
For factory gauges, most tachometers can be driven by the Jackpot 2 using a square-wave tach output. For broader gauge coverage, the included Aces handheld (or an optional Bluetooth module) can display tach, speed, battery voltage, fuel level, and other key sensor data. All Aces EFI systems are also compatible with Dakota Digital gauges using the Dakota Digital EFI BIM module.
Installation Expectations
Most installs can be completed in a little over a weekend when the fuel system plan is solid, wideband bungs are installed properly, and wiring is routed cleanly. More complex builds, such as transmission control setups, custom dash integrations, or high-power boosted combinations, will require additional time and setup.
A simple first-start checklist always helps: verify fuel pressure, verify grounds and voltage stability, confirm trigger pattern selection, confirm injector and ignition configuration, start and warm up, then allow closed-loop learning to begin.
Setup and Tuning Experience
Jackpot 2 LS is built to be approachable for first-time EFI builders without limiting experienced tuners.
Guided Setup (Handheld or Bluetooth)
After the install, initial setup is straightforward. Using the included handheld touchscreen (or the Bluetooth module if that’s the option you choose), you’ll run through the setup wizard and answer a few basic questions about your engine and configuration—things like cam type, ignition/timing setup, and other core inputs the ECU needs to start safely and learn correctly.
The wizard process is the same whether your build is stock or aggressive. Where the difference comes in is how far you rely on self-learning. Self-learning is intended for stock to mild combinations and is excellent for daily driving, cruising, and normal load transitions. Wide-open throttle pulls, dyno tuning, and higher-risk operation (especially with aggressive combinations or power adders) should be handled with manual tuning using the free laptop software.
The handheld or Bluetooth module is needed for initial setup, adjustments, and monitoring, but it does not need to remain plugged in once the system is configured and running correctly. Think of it as your setup and control interface: use it to configure, make changes, and view live sensor data whenever you want.
For stock and mild applications, the guided setup wizard and self-learning fueling strategy help deliver quick startup and strong drivability with minimal tuning complexity. Once the engine reaches operating temperature and transitions into closed loop, the system begins learning fueling in real time. After a few drive cycles, fueling accuracy and response continue to improve, and when you are satisfied with the results, you can lock the calibration.
For performance builds, the included USB cable and Aces’ free laptop tuning software give you full manual control, so you can confidently dial in aggressive cam profiles, power adders, and race-focused combinations with complete authority.
Takeaway
The Jackpot 2 LS EFI System is built for real swaps and real builders. It delivers fast guided setup for simple street builds and deep tuning capability for serious performance, while keeping compatibility and install requirements clear so you can buy confidently and build without surprises.
Jackpot 2 LS EFI System - Master Kit with Command Center 2 Surge Tank Specifications
| Specification | Value |
|---|---|
| Accelerometer Support | No |
| Boost Compatible | Yes |
| Boost Control | No, but the Gen 2 chips support it and this feature will be released in the Spring of 2026 |
| CAN-BUS Support | Yes |
| Coil Per Cylinder Ignition Support | Yes |
| Datalogging Support | Yes |
| DOD/AFM Compatible | No |
| Drive by Wire Compatible | Only select Jackpot 2 LS variants are compatible with DBW throttle bodies |
| Dry Nitrous Compatibility | No |
| Dry Nitrous Control | No |
| Supported Fuel Type(s) | Pump Gas (default setting) E85 (requires tuning) |
| EFI Type | Multi-Port |
| EGT Support | Yes |
| Emission Code | 3 |
| Forced Induction Support | Yes |
| Fuel Filter Included | Only in EFI Fuel Kits and Master Kits. |
| Fuel Hose Included | Only in EFI Fuel Kits, Top End Kits, and Master Kits. |
| Fuel Injectors Included | Only in EFI Fuel Kits, Top End Kits, and Master Kits. |
| Fuel Pressure Regulator Included | Only in EFI Fuel Kits and Master Kits. |
| Fuel Pump Included | Only in EFI Fuel Kits and Master Kits. |
| Grade Type | Performance |
| Handheld Included | In select variants |
| Idle Air Control Motor Included | Only in Top End and Master Kits. |
| Ignition Timing Control | Yes |
| Ignition Type | Coil Near Plug |
| Individual Cylinder Fuel Corrections | Yes |
| Injector Connector | Standalone kits give you the option of choosing between EV1 or EV6. Top End & Master Kits come with EV1. |
| Intake Manifold Included | Only in Top End and Master Kits. |
| Knock Retard Support | Yes |
| Engine Compatibility | 1997-2014 GM Gen III & Gen IV LS based engines that use either a 58x/4x or a 24x/1x crank & cam pattern. Common compatible engines include LS1, LS2, LS3, LS6, LS7, LS9, and many popular LS swap variants such as 4.8L, 5.3L, and 6.0L LS-based engines. Compatibility is determined by the trigger pattern and engine features, not just the engine nickname, so confirming the crank and cam pattern is one of the best ways to validate fitment. |
| MAP Sensor | 2.8 Bar |
| MAP Sensor Included | Yes |
| Mounting Hardware Included | Yes |
| Multi-Stage Nitrous Control | No |
| Nitrous Timing Retard | Yes |
| Progressive Nitrous Control | No |
| Self-Learning | Yes, for stock to mild builds |
| Sequential Injection | Yes |
| Throttle Position Sensor Included | Only in Top End and Master Kits. |
| Transmission Control | Select variants have GM 4-speed trans control. See chart at the bottom. |
| User-Tuneable | Yes |
| VVT Compatible | No |
| Injectors | Rated Flow per Injector (lb/hr) | Rated Injector Pressure (psi) | Minimum Injector Opening Time (msec) | 8.0V | 8.8V | 9.6V | 10.4V | 11.2V | 12.0V | 12.8V | 13.6V | 14.4V | 15.2V | 16.0V | 16.8V | 17.6V | 18.4V | 19.2V | 20.0V |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 36 lb/hr (500 hp kits) | 36 | 43.5 | 1.544 | 2.157 | 1.648 | 1.323 | 1.03 | 0.857 | 0.741 | 0.646 | 0.542 | 0.478 | 0.418 | 0.345 | 0.302 | 0.256 | 0.224 | 0.19 | 0.156 |
| 65 lb/hr (800 hp kits) | 65 | 43.5 | 1.555 | 2.081 | 1.761 | 1.417 | 1.161 | 0.992 | 0.833 | 0.763 | 0.677 | 0.597 | 0.511 | 0.462 | 0.407 | 0.342 | 0.359 | 0.328 | 0.291 |
For additional manuals, diagrams, measurements, and more, check out our documents page in our Resource Center by clicking here.
Computing Power
Self Learning & Fully Tunable
Not a tuning wiz? We provide the wizard, so you don't have to be. With Jackpot 2's self-learning* functionality, just answer a few basic questions in the startup wizard, and then the ECU takes care of the rest. After about 30-60 minutes of idling and drive time, the system will build its own tune so you don't have to.
For advanced users and boost control setup, you can use our free tuning software to access even more customizable settings.
*Self-learning works best for stock-mild applications. For more aggressive applications and even some stock-mild applications, manual tuning is recommended.
Boost Control
Looking to boost your ride? While all of our other second-generation EFI systems support single solenoid control, the Jackpot 2 goes above and beyond with dual Mac 3-port solenoid control*. Never worry about dangerous overboost again–our safety features will detect it and drop pressure automatically. Our self-learning features will even pull timing as it sees boost, for smooth, safe acceleration. Of course, you can always use our advanced tuning software to take it to the next level if you have the chops.
*Boost Control is currently disabled in the firmware, but will be added via a free firmware update in the summer of 2026.
Transmission Control
While manual transmission compatibility comes with each of the Jackpot 2 LS systems, select versions also include trans control for the following GM 4-speed transmissions:
- 4L60E ('96-'03)
- 4L65E ('96-'03)
- 4L67E ('96-'03)
- 4L80E ('94-'03)
ETB Control
Whether you need drive-by-cable, drive-by-wire, or both in one, the Jackpot LS EFI system has you covered.
See the compatibility list here.
** Select systems include sub-harnesses for both 6 and 8-pin pedals.
Additional Control Items
Peace of mind is priceless. Well, it's cheaper than a destroyed engine at least. With Knock Control on the Jackpot 2, you can rest assured that you have a last line of defense against dangerous knock. Never again worry about a bad batch of fuel or imperfections in your tune killing your ride without warning– Aces has your back.
For those looking for optimal launches, whether at the track or the red light, the Jackpot 2 comes with both fuel-cut and spark-cut 2-step rev limiters. These are fully selectable and configurable in the handheld or PC software.
Double fan control = double the cooling power. The Jackpot ECU can easily handle a dual radiator fan setup to keep your engine frosty.
24x & 58x Reluctor Wheel
Whether your LS engine is 24x or 58x, the Jackpot 2 gets the job done. It comes packaged with wiring harnesses for both variations, and can be easily configured for compatibillity with either reluctor wheel type.
Pre-terminated EV1/EV6
Whether your LS engine has EV1 or EV6 connectors, Aces has you covered. Our wiring harnesses come pre-terminated with the connectors of your choice, so you don't have to worry about any fiddly splicing.
2 WBO2 Sensors
The Jackpot LS system utilizes two WBO2 sensors to read each bank of your V8 engine. Dual wide-band sensors allow precise calibration of each cylinder bank, optimizing performance and allowing more thorough tuning of your engine without any compromises.
Fuel Level
Worried about losing your fuel gauge to an aftermarket EFI setup? Don't be. With your Aces Handheld Controller or app, you'll be able to see your fuel level at all times.
Master Kit Feature
(Fuel) Pump Up the Jam
Each Master Kit will come with a fuel system of your choosing. You can scroll down to read more about the available options below.
255 In-line Fuel System
A frame-mounted in-line pump with all of the necessary fittings and hose.
Command Center 2
A surge tank system that allows you to keep your mechanical pump in place. A better option for classic trucks or other vehicles where the tank is hard to access.
Tight-fit In Tank Pump Module
An in-tank fuel pump module available with or without PTFE hose.
Requires a return line to the tank.
Tank Conversion Fuel Pump Module
An in-tank fuel pump module with an internal regulator. Ideal for fuel cells.
Does not require a return line to the tank.
How do I set up and program my system?
Interface Options
Our EFI systems are self-learning for most stock-to-mild engine builds. You’ll use one of the included interface modules (depending on the option selected at purchase) to complete the initial setup and make adjustments on the fly. The startup wizard will prompt you with 6–12 setup questions, after which the self-learn feature takes over.
Additional fine-tuning may be required later, depending on your specific build.
5" Handheld (3rd Gen)
- Capacitive touch screen
- 64-bit processor
- 1280x720 resolution
- Cable connection via main harness
8" Handheld (1st Gen)
- Capacitive touch screen
- 64-bit processor
- 1280x800 resolution
- Wifi chip for software updates via the internet*
- Cable connection via main harness
*Currently disabled in this version of the software but will be enabled in a future version
Most common questions
Quick answers to our most common queries for this product.
The Jackpot 2 LS EFI System - Master Kit with Command Center 2 Surge Tank are designed to work with most stock or aftermarket ignition components. They will work with most tachometers and are compatible with Dakota Digital dashes using their Aces BIM Module (BIM-EFI-1).
Self-tuning is a common term used among aftermarket EFI companies, but we prefer the term "self-learning" as that is more accurate, even for our competitors who advertise "self-tuning."
Our systems are designed to self-learn the fuel MAPs and work best for stock-mild builds. Some mild builds and anything beyond that would require manual tuning, of which the system is fully capable. Additional features like nitrous and boost are also considered beyond stock and require manual adjustments to enable and configure these kinds of features.
Yes! You can make many changes using the Bluetooth or handheld interface, and we also offer a free PC app for more advanced tuning.
Yes to both! The Jackpot 2 LS EFI System - Master Kit with Command Center 2 Surge Tank are compatible with both blow-through, draw-through, and nitrous applications and are also compatible with E85 Fuels. The Jackpot 2 LS EFI System - Master Kit with Command Center 2 Surge Tank' MAP sensor can be scaled for up to 26 lbs of boost and can be set to retard timing.
Note that for boost, the system is compatible, but cannot control the boost. You will need to use a separate controller for things such as wastegate control or solenoid activation. Use of these features will require manual tuning.
After sitting on the phone over an hour James got my situation resolved and had great customer service and patience to get my order correct
It’s not installed yet, however all the components are very super nice quality. Very excited.
Great price with the Black Friday deal and fast shipping. Everything was packaged really nice but still working on the motor so I haven’t installed anything yet.
Have had my jackpot system for a few months now. And I can definitely say this system is great for its price!! I like the easy install, with everything labeled its kinda hard to mess up i feel. Fired up first try been running on the wizard with some minor adjustment on the handheld. I will definitely buy another system when I build another LS.
Before you believe a negative comment on here ask yourself can the person leaving the review follow instructions to install this system one mistake can make it not work correctly and they jump on here with the tech support bs they aren’t going to come to your house and do it for you follow the instructions get it to start and run then tune it doesn’t tune it’s self it’s a good product I’ve had mine nearly 2 years zero issues (I ran mine for a year before I had a remote tune done it ran good you just have to mess with it to get the AFR correct)
Bought my Jackpot just over a year ago & between everyday driving to long distance from Mo. to NC with not one issue. Once a problem did arise after a yr+ time had past (absolutely my fault) I sent in my equipment as asked & got back it back working again. Very helpful across the board from the emails to phone calls to mailing!! Thanks Again
5.3 Topend kit 🤌
So far we haven't gotten this thing sorted out yet. The engine continues to run after the key is turned off.
The PDM looks like a real nice idea but, you have to cut up and modify the wiring harness to connect it. That's not a good way to start out.
love it you can tell you guys put in the time this kit rocks ,the quality is top notch ,the ease of the wiring ,the hardware, the touchscreen,,off of the part have the exact Fitment I was looking for ,,the cherry on top the price , you can tell you do it out of love so thank you!!!!.I have used fi tech ,holley , Edelbrock and your kits hold there own ........!!!! everyone look out ace is the real deal,and now I can compete in some real competitions ty ill send pics soon ps it learned my cam with ease and grate drivability ,the power omg crisp throttle , built ,5.3 cam , ace injection , super t10 4 speed , 3,42 posi 1991 gmcSonoma
One of the easy ways to do a LS swap glad I picked this system high quality looks amazing wiring is a breeze
Don’t waste your time or money working with another system. Installation was very easy and the system had my engine running how it should have with the other management systems I’ve used. Had I known the quality and ease of use of the jackpot system I wouldn’t have been wasted the time or money on anything else. Great job on these kits!
Installed a LS3 6.2 crate motor in a C3 Corvette. Looked at all the options for engine management and landed on the Aces Jackpot LS system. Aces had a compact ECU, dual O2s, DBW, and trans control needed for the build. Main harness is nicely loomed with plenty of length, quality connectors, and all wires are clearly labeled. After plugging in all the sensor, connect 4 wires - pwr, gnd, pump, acc and it’s ready to run. The setup wizard is super easy using the 7” screen. Car started up within seconds on the second crank and settled to my target idle. This system is the best value on the market for an LS swap.
First the product was readily available when competitors was not. It came quickly very nicely boxed with everything labeled. Nice cloth loom. Very descriptive manual and labels. No for the company and their supporters. I got my truck going and headed to PTTS and the guys at the aces tent were amazing in support and helping with tuning. They were not satisfied until we got some issues resolved and it purred all the way home from bowling green to southern Indiana. I can not thank Bradley Woodall enough for his help. Long story short I completely recommend this stuff!!
I have used this kit on my own protiuring car.. a 1968 camaro.. and it has proven to be reliable and easy to use
Installed Jackpot for LS on (2) swaps, 6.0 in Foxbody and 5.3 in OBS truck, both performed well, and can't beat the price - very happy with Aces EFI!
Tony in Berthoud, CO
I got this Jackpot EFI unit to replace the stock Corvette 411 computer that I put into my Datsun 280Z. The ACES computer is nice and small compared to the corvette computer. A few things that I did not like about the system. The wire harness was very long, with these big plugs for the sub harness wires. The big plugs where designed to go in the rear of the engine. I the Datsun there is no room for them in the back because of how close it was to the firewall. I cut the plugs out of the harness and spliced the wires back together.The wire loom that was over the wires was not good quality. I ended up cutting al the loom off and replacing it with better stuff. I included pictures of before and after the better quality loom. The loom was cut short, so at the ends of the wires was any where from 2 to 3 inches of tape to cover up the short loom. The plugs for the coils where not the same as the stock Corvette, so I had to get new ignition coils. Then the injector plugs are EV6 and the stock ones are EV1. They don't have a wire harness for the stock injectors, so I had to get some adapters from Ebay. Those would be nice to have included in the kit or have the option to pick what injectors and coils you are running. the oxygen sensor wires are very long also. I would recommend that the wire harness has the option to come none terminated at the ends fro the people who want the length to be custom to make it all fit and look good.The wires had very big white labels on them. It made it easy to know where they went. But after you plugged them in there was this big label there that I had to cut off. I then wrote with a sharpee on the plugs what they went to.There was another big plug that has all the loose wires on it. Again, I cut that off and then just connected the wires that I need for my setup.
Now for the good:
The instructions are very nice and easy to follow. I like that they included the wiring diagrams for this system, very helpful. The user interface on the touch screen is great. The setup was easy, I just answered a few questions and then the car started right up and ran great.I like the two wide band oxygen sensors that come in the kit. It does take a few more rotations of the engine to start than the Corvette computer. I liked the included rubber mounts for the computer. The kit came with it's own relays and two inline fuses. I got the upgraded 7 inch screen, which is nice. I mounted it to the front of my dash for now while I tune the engine, then I will remove it after that.
Overall this is a great system. I am glad I got it and I will get another one for my next project.
This Jackpot EFI system is great, Thank you.
Bought the jackpot and harness kit for my car. Easy to work with and quality parts ! 5 stars !
This is truly a great system very easy to install and the wizard is so easy to understand if I can do it anyone can great job! Aces you guys are awesome and the customer service and tech team are so helpful, if you need a system Go Aces !!!!
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