Killshot II 4-bbl EFI System Master Kit

The Killshot II 4-bbl EFI System Master Kit by ACES FUEL INJECTION is a comprehensive electronic fuel injection conversion designed for classic and vintage vehicles running traditional carburetor setups. This master kit addresses the core challenge faced by enthusiasts and restorers: upgrading older engines to modern EFI standards without sacrificing authenticity or requiring extensive fabrication. Whether you're building a street machine, restomod, or daily driver, the Killshot II delivers the reliability and tuneability that modern drivers expect from their fuel delivery systems.

The Killshot II four-barrel EFI system replaces traditional carburetor operation with precisely metered fuel injection, utilizing ACES' proven multiport or single-point injection architecture to optimize air-fuel ratios across the RPM band. As a complete master kit, it includes all critical components—fuel pump module, injectors, fuel rail, ECU with base mapping, harness, and intake manifold adapter—eliminating the need to source parts individually or cross-reference compatibility. The system's modular design accommodates aftermarket intake manifolds and custom engine bay layouts, ensuring a versatile fit for various applications.

Mechanics and serious hobbyists installing the Killshot II benefit from ACES' reputation for user-friendly installation and documentation. While the included calibration allows for easier installation, it is important to note that some setups may still require dyno tuning for optimal performance. This master kit format eliminates guesswork when transitioning from carburetors to EFI, making it an ideal choice for those looking to modernize their classic vehicles.