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Vehicle Info NeededFuel Pump Relay Harness For EZ-EFI Self-Tuning Fuel Injection Master Kits
Ships on 09/09/2026
Lowest Price Guarantee- Fuel Pump Relay Harness
- For Use With EZ-EFI Self-Tuning Fuel Injection Master Kits
- Includes a Loose Ring Terminal and an Insulated Butt Splice
- Mates Directly to the Fuel Pump Controller Connector on the Main Wiring Harness
FAST's EZ-EFI Self-Tuning Fuel Injection Kits are the worlds simplest fuel injection system on the market today. Designed for all applications making up to 650 horsepower, the EZ-EFI Fuel System easily bolts onto any carbureted or multi-port application in a single afternoon, making it the easiest EFI system you will ever install. Simply hook up the system, answer the questions from the improved Setup Wizard on the color touchscreen hand-held unit, and the system will tune itself as you drive.
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The FAST EZ-EFI features a die cast and black powder-coated four injector throttle body with integrated fuel rails. It provides even fuel distribution and adequate airflow, no replacement is needed. In addition to matching any 4150-style carbureted manifold, the EZ-EFI Self-Tuning Fuel Injection System also works with your original carb-style throttle linkage and features OEM sensors, including standard GM versions. It also works with all ignition setups, including HEI.
The included hand-held device offers a variety of display dashes, a clean and easy to use interface and an LED indicator that can alert users to errors (including overheating) or be used as a shift light. The wiring harness features a premium loom, added protective fuses and a streamlined design, while the ECU hardware provides added protection against electrical/ignition noise and hardware damage.
Features:
- No tuning experience or laptop needed; intuitive Setup Wizard guides you through the start-up process & the system tunes itself.
- 4150 throttle body works with original carb-style linkage & uses all OEM sensors.
- Works with any ignition setup, including HEI.
- Built-in diagnostics & “limp mode” provide maximum engine protection in the event of trouble.
- Made in the USA.
