Aces EFI Killshot 4-bbl EFI System
Fuel injection conversion with real-time control. This is a pro-level quality product.
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Aces' Killshot EFI system stands out as one of the most sophisticated throttle body injection (TBI) systems available today with . Featuring four 100 lb/hr fuel injectors, this system can support an impressive 650 horsepower.
Whether you're constructing a budget-friendly vehicle or a high-performance racing machine, Aces EFI's Killshot system delivers the cutting-edge technology and features you require, all in a package that is easy to install and tune, allowing you to elevate your vehicle's performance!

Featurs of the Aces EFI Killshot™ TBI System
- 32-bit software (OEM standard) that manages input/output signals, voltage, and RPM faster and more consistently than competitors
- 5" full-color touchscreen handheld with built-in GPS speedometer
- Integrated coil driver for ignition timing control
- Simple calibration wizard for initial setup- no laptop tuning required.
- Self-learning fuel table
- Dual fan control
- Step retard for nitrous control
- Boost compatibility (using laptop software)
- Remote-mounted ECU to avoid common heat/vibration-induced hardware failures
- 3-bar TMAP sensor for boost & nitrous compatible (using laptop software)
- Free laptop software available for pro applications
- Compatible with Aces' handhelds, dashes, CAN modules, and TCMs.
- Bosch 4.9 WBO2 sensor
- (4) 100 lb/hr injectors
Aces EFI | |
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Throttle Body Finish | Choose Your Finish or Black or Polished or Gold |
Fuel System Type | No Fuel System Kit or 255 In-line Pump System w/40' PTFE Hose or Command Center 2 Surge Tank or Tank Conversion Pump Module with Internal Regulator & 20' PTFE Hose Kits (340 LPH) |
Engine Ignition Type | No Ignition Kit or SB/BB Chevy or 289/302 SBF or 351W SBF or 351C/460 BBF or Pontiac 326-455 or Mopar SB LA 273-360 or Mopar BB 383/400 or Mopar BB 426/440 |
Handheld Unit | 5" Handheld |
Uncategorized | |
Brand | Aces EFI |
ACES Killshot EFI System
- ECU externally mounted
32-bit MCU (OEM Standard)
- 5", full-color, touch screen
- Only one connector to throttle body
- (4) 100 lb/hr injectors
- 650 HP N/A
- Has timing control
Retail Pricing $959.99 USD
Holley Sniper 2
- ECU mounted on the throttle body.
- 16-bit MCU
- 3.5" resistive touch screen
- Several separated cables & wires
- (4) 100 lb/hr injectors
- 650 HP N/A
- Has timing control
Retail Pricing $1299.95 USD
FiTech GoEFI600
- ECU mounted on the throttle body.
- 16-bit MCU
- 3.5" screen
- Several separated cables & wires
- (4) 100 lb/hr injectors
- 600 HP N/A
- No timing control