Killshot 2 Pro
4-bbl TBI system with an external ECU for classic engines up to 650 hp
Killshot 2 Pro EFI System
3-Year Warranty
30-Day Returns
Secure Payment
Kit Types Explained
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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+) and want to use your stock ignition or if you already have an aftermarket distributor. (Note that a distributor must be locked out to run timing control.)
- Includes the following:
- Throttle body
- ECU
- Handheld or Bluetooth Module
- Full Harness
- Sensors
- Accessories
- 2. Fuel Kits
Perfect if you want to use your stock ignition or if you already have an aftermarket distributor. (Note that a distributor must be locked out to run timing control.)
- Includes the following:
- A complete Standalone Kit
- A Fuel Delivery System of your choosing
- 3. Top End Kits
Perfect if you already have a high pressure fuel system (43 PSI+) and want to run timing control.
- Includes the following:
- A complete Standalone Kit
- A Magnetic Distributor of your choosing
- An AC2008 Ignition Coil
- 4. Master Kits
These include everything you need to go from carb to EFI and run timing control.
- Includes the following:
- A complete Standalone Kit
- A Fuel Delivery System of your choosing
- A Magnetic Distributor of your choosing
- An AC2008 Ignition Coil
Product Info
Overview
Specs
Killshot 2 Pro EFI System Specifications
| Specification | Value |
|---|---|
| Series | Killshot 2 |
| Application | Classic small/big block engines under 650 HP (NA) or 550 HP (boosted). |
| Why you would buy one over the other | Includes all the features of the Killshot 1, plus: 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 |
| 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) |
| 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 |
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?
Killshot 2 Pro EFI System Specifications
| Specification | Value |
|---|---|
| Series | Killshot 2 |
| Application | Classic small/big block engines under 650 HP (NA) or 550 HP (boosted). |
| Why you would buy one over the other | Includes all the features of the Killshot 1, plus: 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 |
| 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) |
| 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 |
For additional manuals, diagrams, measurements, and more, check out our documents page in our Resource Center by clicking here.
Find parts for your vehicle
Select your vehicle details to confirm compatibility.
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
- 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
Most common questions
Quick answers to our most common queries for this product.
The Killshot 2 Pro EFI System 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 2 Pro EFI System 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-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.
The Killshot 2 Pro EFI System 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 2 Pro EFI System is compatible with both blow-through, draw-through, and nitrous applications and is also compatible with E85 Fuels. The Killshot 2 Pro EFI System'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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