Fuel Injection Retrofit Kits

Upgrade your ride with the Holley Sniper EFI Self-Tuning Kit in a sleek black ceramic finish. Economically priced, it offers all the benefits of EFI while leaving room in your budget for other upgrades. Ideal for street rods, muscle cars, off-road trucks, or nearly any carbureted vehicle, this kit resolves common issues like cold starts, hesitations, vapor lock, and flooding. Experience the tactical accuracy of EFI today with this innovative kit!

Introducing the Holley Sniper EFI 4150 Super Sniper 650! Transform your blow-thru carbureted turbo engine to EFI effortlessly. Ideal for lower horsepower applications, this model supports up to 650 HP with its four injector design. With built-in nitrous control, there's no need for a separate controller, simplifying your setup. Each system includes a USB to CAN tuning cable and free Sniper EFI Software for unparalleled engine control. Holley Sniper delivers powerful performance and is packed with features like advanced boost control, programmable air-fuel ratios, and user-friendly adjustability, making it the ultimate choice for enhancing your engine's capabilities.

Introducing the Holley Super Sniper EFI! Transform your blow-through carbureted turbo engine into a high-performance EFI beast with this cutting-edge system. Designed for up to 650 HP, it features four powerful injectors ideal for lower horsepower applications with power adders or additional sensor needs. The Super Sniper boasts built-in nitrous control, eliminating the need for an additional controller. Plus, enjoy limitless engine control with the free Sniper EFI Software and a USB to CAN tuning cable included. Take your engine to the next level with Holley’s superior performance technology!

Introducing the Holley Sniper EFI Self-Tuning Master Kit in a sleek Black Ceramic Finish. Holley has made electronic fuel injection more accessible than ever with this revolutionary product. Designed to fit 4150 Flange & Spread Bore manifolds, this kit offers a dual pattern bolt-on carburetor replacement with a throttle body-mounted ECU—eliminating the need for extra boxes. Capable of supporting up to 650hp with just four wiring connections required, it simplifies installation and offers a complete fuel system including 20ft of 3/8” Vapor Guard Fuel Hose, a fuel pump, filters, and necessary hardware. The high-resolution full-color touchscreen facilitates easy setup, tuning, and gauge displays, while the self-tuning ECU handles calibration effortlessly. Experience the future of EFI with Holley Sniper—bringing EFI within reach for everyone.