Killshot Fusion
Self-learning EFI for classic engines. Contains a 32-bit automotive-grade ECU integrated right into the throttle body.
Killshot 2 Pro
Self-learning EFI with an externally mounted ECU for classic engines. Utilizes expanded 31 x 31 table resolution and integrated boost control.
Killshot Fusion vs. Killshot 2 Pro
Both are 4-bbl EFI systems for classic small and big block engines with a 4150 flange and support up to 650 HP.
The Killshot Fusion is a stripped-down variant and even has a lite version for lower HP engines, while the Killshot 2 Pro is a more advanced platform for those who need additional features.




- Internal ECU
- Designed for stock-race builds under 650 hp (NA)
- External ECU
- Designed for stock-race builds under 650 hp (NA)
- Largest resolution tables (31x31)
- Dual quad compatible to support up to 1,200 hp
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).
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).
4150
4150
100 lb/hr
100 lb/hr
Yes! This works best for stock-mild builds and for anything beyond that, the system is fully tunable.
Yes! This works best for stock-mild builds and for anything beyond that, the system is fully tunable.
Yes
Yes
Internal
External
Yes
Yes
- Canister Style
- Aces Brand
- Standard Aftermarket
- Aces Brand
- Standard Aftermarket






































