Killshot 2 Pro EFI System (Black Friday)
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Product Info
Overview
Killshot 2 Pro EFI System
The Killshot 2 Pro is the ultimate evolution of our throttle body EFI lineup. Built for enthusiasts and racers who demand more from their engine management system. By combining everything users love about the Killshot 2 with advanced tuning features, dual-quad capability, and upgraded hardware, the Killshot 2 Pro offers unmatched performance, flexibility, and control in a single intelligent package.
At the core of the Killshot 2 Pro is a 32-bit, high-speed ECU with support for up to 1,200 horsepower in dual-quad configuration (second unit sold separately). Each throttle body includes four 100 lb/hr fuel injectors, easily supporting up to 650 HP in single-unit form. Thanks to its integrated 3-bar TMAP sensor, the system handles up to 27 psi of boost, making it ideal for turbocharged and supercharged applications.
Expanded Tuning, Precision Control
Killshot 2 Pro takes tuning to the next level with expanded tables and advanced strategies designed for performance enthusiasts:
- 31x31 VE Fuel Tables: Greater resolution for fueling across the full load and RPM range
- 31x31 MBT Spark Tables: More precise ignition timing control under all engine conditions
- Closed-Loop Learning with Expanded Resolution: Improved learning accuracy for street and mild builds
- Built-In Fuel Pressure Sensor: Real-time fuel pressure data at your fingertips, no need for external gauges
- Progressive Throttle Linkage: Smoother part-throttle drivability and superior pedal feel
- Boost Control & Fuel Level Inputs: Future-ready for software unlocks like boost solenoid control and dash integration
Complete Monitoring & Manual Control
Each Killshot 2 Pro comes with our 3rd-generation 5” HD touchscreen handheld, giving you full access to system data, tuning parameters, and real-time diagnostics. Whether you're fine-tuning idle quality or dialing in boost timing, you’ll have complete control at your fingertips.
Want even more precision? Our PC Tuning Suite gives experienced users full manual access to every aspect of the EFI system, including AFR targets, ignition strategies, boost enrichment, and more.
System Features:
- Supports up to 650 HP (single) / 1,200 HP (dual-quad NA)
- Four 100 lb/hr fuel injectors per throttle body
- 3-bar TMAP Sensor – Supports up to 27 psi boost
- Built-in Fuel Pressure Sensor – Live data for accurate fuel control
- Progressive Throttle Linkage – Smooth response at any speed
- TPS Output – For transmission controllers, nitrous activation, and more
- Available in Black, Polished, or Gold finishes
- Standalone or Complete Kit Options available
- Compatible with all 4150-flange 4-barrel intake manifolds
Whether you’re upgrading from a carburetor or stepping up from a basic EFI system, the Killshot 2 Pro gives you everything you need to fuel, tune, and dominate with confidence. It’s the perfect solution for serious builders who want the reliability of modern EFI with the power and simplicity of a throttle body system.
Specs
Killshot 2 Pro EFI System (Black Friday) Specifications
| Specification | Value |
|---|---|
| Series | Killshot 2 |
| Application | Classic small/big block engines under 650 HP (NA) or 550 HP (boosted). Dual quad setups support 1,200 HP (NA) or 1,000 HP (boosted). |
| Why you would buy one over the other | Includes all the features of the Killshot 1, plus: Dual quad capabilities, lower profile design for more universal air cleaner fitment, built-in fuel pressure sensor, progressive linkage, B60 Chip, expanded VE tables (31x31), expanded spark tables (31x31), Boost Control*, fuel level input, additional I/O wires for future expansion. |
| Accelerometer Support | No |
| Accepts Firmware Updates | Yes |
| Advanced Tuning Software Compatible | Yes |
| Air Cleaner Diameter | 5-1/8" |
| Boost Compatible | Yes |
| Boost Control | Yes* (via firmware update) |
| CAN-BUS Support | Yes |
| CFM | 1,000 |
| Chip Set | B60 Series |
| Coil Per Cylinder Ignition Support | No |
| Data Cable Included | Yes |
| Datalogging Support | Yes |
| Distributor Compatibility | MAG, Hall-Effect, Coil-, CDI |
| Dry Nitrous Compatibility | No |
| Dual Quad Capable | Yes |
| E85 Compatible | Yes, with proper fuel tuning (not out of the box) |
| ECU Location | External |
| EFI Type | Throttle Body Injection |
| EGT Support | Yes |
| Emission Code | 3 |
| Fan Control | Yes |
| Flange Size | 4150 / Square-bore |
| Forced Induction Compatibility | Yes |
| Fuel Injectors Included | Yes, built in |
| Fuel Level Input | Yes |
| Fuel/Oil Pressure Input | Yes |
| Grade Type | Automotive |
| Handheld Included | Yes |
| Idle Air Control Motor Included | Built-in |
| Ignition Timing Control | Yes |
| Injector Quantity | 4 |
| Injector Size | 100 lb/hr |
| Inlet/Outlet Size | -6 AN |
| MAP Sensor Included | Yes |
| MAP Sensor Rating | 3 Bar |
| Material | Cast Aluminum (throttle body) |
| Max HP Support | 650 HP (single quad NA), 1,250 HP (dual quad NA) |
| Mounting Hardware Included | Yes |
| Multi-Stage Nitrous Control | No |
| Nitrous Retard | Yes |
| Ported Vacuum | Yes |
| Progressive Linkage | Yes |
| Progressive Nitrous Control | No |
| Recommended Fuel PSI Range | 43–58 PSI |
| Release Date | Spring 2025 |
| Self-Learning | Yes |
| Throttle Body Height | 3-5/16" |
| Throttle Position Sensor Included | Yes, built in |
| Transmission Control | Not built in, but compatible with Aces Trans Control Modules |
| WBO2 Sensor | 1 |
| Wet Nitrous Control | Yes, but non-progressive |
Documents
What's Included?
Note: This list does not include any add-ons selected above.
Black / Bluetooth Module Only
- USB-CAN Cable (x1)
- System Parts/Components / EFI Kit Accessories (x1)
- System Sensors and Small Electronics / Coolant Temperature Sensor (CTS) (x1)
- System Sensors and Small Electronics / WBO2 Sensor (x1)
- System Parts/Components / Killshot II Black Throttle Body (x1)
- System Parts/Components / System ECUs - Killshot 2 (x1)
- System Parts/Components / Killshot 2 / Full System Harness (x1)
- Bluetooth CAN Module (x1)
- Sale Limiter / Killshot 2 Pro (x1)
- System Parts/Components / Main Relay and Fuel Pump Relay Harness (x1)
- Internal inventory records / Killshot 2 Installation Manual (x1)
- Internal inventory records / Killshot 2 Technical Specifications (x1)
Polished / Bluetooth Module Only
- USB-CAN Cable (x1)
- System Parts/Components / EFI Kit Accessories (x1)
- System Sensors and Small Electronics / Coolant Temperature Sensor (CTS) (x1)
- System Sensors and Small Electronics / WBO2 Sensor (x1)
- System Parts/Components / System ECUs - Killshot 2 (x1)
- System Parts/Components / Killshot 2 / Full System Harness (x1)
- Bluetooth CAN Module (x1)
- System Parts/Components / Killshot II Polished Throttle Body (x1)
- Sale Limiter / Killshot 2 Pro (x1)
- System Parts/Components / Main Relay and Fuel Pump Relay Harness (x1)
- Internal inventory records / Killshot 2 Installation Manual (x1)
- Internal inventory records / Killshot 2 Technical Specifications (x1)
Gold / Bluetooth Module Only
- USB-CAN Cable (x1)
- System Parts/Components / EFI Kit Accessories (x1)
- System Sensors and Small Electronics / Coolant Temperature Sensor (CTS) (x1)
- System Sensors and Small Electronics / WBO2 Sensor (x1)
- System Parts/Components / System ECUs - Killshot 2 (x1)
- System Parts/Components / Killshot 2 / Full System Harness (x1)
- Bluetooth CAN Module (x1)
- System Parts/Components / Killshot II Gold Throttle Body (x1)
- Sale Limiter / Killshot 2 Pro (x1)
- System Parts/Components / Main Relay and Fuel Pump Relay Harness (x1)
- Internal inventory records / Killshot 2 Installation Manual (x1)
- Internal inventory records / Killshot 2 Technical Specifications (x1)
Killshot 2 Pro EFI System
The Killshot 2 Pro is the ultimate evolution of our throttle body EFI lineup. Built for enthusiasts and racers who demand more from their engine management system. By combining everything users love about the Killshot 2 with advanced tuning features, dual-quad capability, and upgraded hardware, the Killshot 2 Pro offers unmatched performance, flexibility, and control in a single intelligent package.
At the core of the Killshot 2 Pro is a 32-bit, high-speed ECU with support for up to 1,200 horsepower in dual-quad configuration (second unit sold separately). Each throttle body includes four 100 lb/hr fuel injectors, easily supporting up to 650 HP in single-unit form. Thanks to its integrated 3-bar TMAP sensor, the system handles up to 27 psi of boost, making it ideal for turbocharged and supercharged applications.
Expanded Tuning, Precision Control
Killshot 2 Pro takes tuning to the next level with expanded tables and advanced strategies designed for performance enthusiasts:
- 31x31 VE Fuel Tables: Greater resolution for fueling across the full load and RPM range
- 31x31 MBT Spark Tables: More precise ignition timing control under all engine conditions
- Closed-Loop Learning with Expanded Resolution: Improved learning accuracy for street and mild builds
- Built-In Fuel Pressure Sensor: Real-time fuel pressure data at your fingertips, no need for external gauges
- Progressive Throttle Linkage: Smoother part-throttle drivability and superior pedal feel
- Boost Control & Fuel Level Inputs: Future-ready for software unlocks like boost solenoid control and dash integration
Complete Monitoring & Manual Control
Each Killshot 2 Pro comes with our 3rd-generation 5” HD touchscreen handheld, giving you full access to system data, tuning parameters, and real-time diagnostics. Whether you're fine-tuning idle quality or dialing in boost timing, you’ll have complete control at your fingertips.
Want even more precision? Our PC Tuning Suite gives experienced users full manual access to every aspect of the EFI system, including AFR targets, ignition strategies, boost enrichment, and more.
System Features:
- Supports up to 650 HP (single) / 1,200 HP (dual-quad NA)
- Four 100 lb/hr fuel injectors per throttle body
- 3-bar TMAP Sensor – Supports up to 27 psi boost
- Built-in Fuel Pressure Sensor – Live data for accurate fuel control
- Progressive Throttle Linkage – Smooth response at any speed
- TPS Output – For transmission controllers, nitrous activation, and more
- Available in Black, Polished, or Gold finishes
- Standalone or Complete Kit Options available
- Compatible with all 4150-flange 4-barrel intake manifolds
Whether you’re upgrading from a carburetor or stepping up from a basic EFI system, the Killshot 2 Pro gives you everything you need to fuel, tune, and dominate with confidence. It’s the perfect solution for serious builders who want the reliability of modern EFI with the power and simplicity of a throttle body system.
Killshot 2 Pro EFI System (Black Friday) Specifications
| Specification | Value |
|---|---|
| Series | Killshot 2 |
| Application | Classic small/big block engines under 650 HP (NA) or 550 HP (boosted). Dual quad setups support 1,200 HP (NA) or 1,000 HP (boosted). |
| Why you would buy one over the other | Includes all the features of the Killshot 1, plus: Dual quad capabilities, lower profile design for more universal air cleaner fitment, built-in fuel pressure sensor, progressive linkage, B60 Chip, expanded VE tables (31x31), expanded spark tables (31x31), Boost Control*, fuel level input, additional I/O wires for future expansion. |
| Accelerometer Support | No |
| Accepts Firmware Updates | Yes |
| Advanced Tuning Software Compatible | Yes |
| Air Cleaner Diameter | 5-1/8" |
| Boost Compatible | Yes |
| Boost Control | Yes* (via firmware update) |
| CAN-BUS Support | Yes |
| CFM | 1,000 |
| Chip Set | B60 Series |
| Coil Per Cylinder Ignition Support | No |
| Data Cable Included | Yes |
| Datalogging Support | Yes |
| Distributor Compatibility | MAG, Hall-Effect, Coil-, CDI |
| Dry Nitrous Compatibility | No |
| Dual Quad Capable | Yes |
| E85 Compatible | Yes, with proper fuel tuning (not out of the box) |
| ECU Location | External |
| EFI Type | Throttle Body Injection |
| EGT Support | Yes |
| Emission Code | 3 |
| Fan Control | Yes |
| Flange Size | 4150 / Square-bore |
| Forced Induction Compatibility | Yes |
| Fuel Injectors Included | Yes, built in |
| Fuel Level Input | Yes |
| Fuel/Oil Pressure Input | Yes |
| Grade Type | Automotive |
| Handheld Included | Yes |
| Idle Air Control Motor Included | Built-in |
| Ignition Timing Control | Yes |
| Injector Quantity | 4 |
| Injector Size | 100 lb/hr |
| Inlet/Outlet Size | -6 AN |
| MAP Sensor Included | Yes |
| MAP Sensor Rating | 3 Bar |
| Material | Cast Aluminum (throttle body) |
| Max HP Support | 650 HP (single quad NA), 1,250 HP (dual quad NA) |
| Mounting Hardware Included | Yes |
| Multi-Stage Nitrous Control | No |
| Nitrous Retard | Yes |
| Ported Vacuum | Yes |
| Progressive Linkage | Yes |
| Progressive Nitrous Control | No |
| Recommended Fuel PSI Range | 43–58 PSI |
| Release Date | Spring 2025 |
| Self-Learning | Yes |
| Throttle Body Height | 3-5/16" |
| Throttle Position Sensor Included | Yes, built in |
| Transmission Control | Not built in, but compatible with Aces Trans Control Modules |
| WBO2 Sensor | 1 |
| Wet Nitrous Control | Yes, but non-progressive |
Note: This list does not include any add-ons selected above.
Black / Bluetooth Module Only
- USB-CAN Cable (x1)
- System Parts/Components / EFI Kit Accessories (x1)
- System Sensors and Small Electronics / Coolant Temperature Sensor (CTS) (x1)
- System Sensors and Small Electronics / WBO2 Sensor (x1)
- System Parts/Components / Killshot II Black Throttle Body (x1)
- System Parts/Components / System ECUs - Killshot 2 (x1)
- System Parts/Components / Killshot 2 / Full System Harness (x1)
- Bluetooth CAN Module (x1)
- Sale Limiter / Killshot 2 Pro (x1)
- System Parts/Components / Main Relay and Fuel Pump Relay Harness (x1)
- Internal inventory records / Killshot 2 Installation Manual (x1)
- Internal inventory records / Killshot 2 Technical Specifications (x1)
Polished / Bluetooth Module Only
- USB-CAN Cable (x1)
- System Parts/Components / EFI Kit Accessories (x1)
- System Sensors and Small Electronics / Coolant Temperature Sensor (CTS) (x1)
- System Sensors and Small Electronics / WBO2 Sensor (x1)
- System Parts/Components / System ECUs - Killshot 2 (x1)
- System Parts/Components / Killshot 2 / Full System Harness (x1)
- Bluetooth CAN Module (x1)
- System Parts/Components / Killshot II Polished Throttle Body (x1)
- Sale Limiter / Killshot 2 Pro (x1)
- System Parts/Components / Main Relay and Fuel Pump Relay Harness (x1)
- Internal inventory records / Killshot 2 Installation Manual (x1)
- Internal inventory records / Killshot 2 Technical Specifications (x1)
Gold / Bluetooth Module Only
- USB-CAN Cable (x1)
- System Parts/Components / EFI Kit Accessories (x1)
- System Sensors and Small Electronics / Coolant Temperature Sensor (CTS) (x1)
- System Sensors and Small Electronics / WBO2 Sensor (x1)
- System Parts/Components / System ECUs - Killshot 2 (x1)
- System Parts/Components / Killshot 2 / Full System Harness (x1)
- Bluetooth CAN Module (x1)
- System Parts/Components / Killshot II Gold Throttle Body (x1)
- Sale Limiter / Killshot 2 Pro (x1)
- System Parts/Components / Main Relay and Fuel Pump Relay Harness (x1)
- Internal inventory records / Killshot 2 Installation Manual (x1)
- Internal inventory records / Killshot 2 Technical Specifications (x1)
Hold your horses
Boost it, baby.
Twice the Killshot. Twice the resolution.
If the shoe (throttle body) fits
Know with the flow
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.
Bluetooth Module
Compatible with Android and iOS* devices and plugs into the CAN connection on the main harness.
Android is available via download here, or in the Google Play Store Fall of 2025.
iOS is available Fall of 2025
5" Handheld (3rd Gen)
- Capacitive touch screen
- 64-bit processor
- 1920x1080 resolution
7" Handheld (2nd Gen)
- Capacitive touch screen
- 32-bit processor
- 1024x600 resolution
Most common questions
Quick answers to our most common queries for this product.
The Killshot Fusion is designed to work with any classic 4, 6, or 8 cylinder engine that is under 650 hp, uses a 4150 style flange, and has a fuel system rated for EFI (43 PSI).
The self learn will work for most stock-mild builds, while some mild and more advanced builds may require manual tuning.
The Killshot Fusion is designed to work with most stock or aftermarket ignition components. It will work with most tachometers and is compatible with Dakota Digital dashes using their Aces BIM Module (BIM-01-2-ACES).
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.
The Killshot Fusion can work with standard stock or aftermarket ignition components, but if you want to run timing control, it will need either a magnetic pickup distributor that has been locked out or a Hall Effect distributor. You will also need to make sure that your fuel delivery system can support 43-58 PSI. Whether or not you need a return line will depend on your fuel delivery system and if the regulator is inside or outside the tank. Whether or not you need to replace your tank will depend on which fuel delivery system you choose. We offer complete Master Kits for each EFI system that come with new ignition components and a fuel delivery system. You can visit the Killshot Fusion Master Kits page here.
Yes to both! The Killshot Fusion is compatible with both blow-through, draw-through, and nitrous applications and is also compatible with E85 Fuels. The Killshot Fusion's 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.
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