Holley EFI 550-617N - HP EFI ECU & Harness Kits

Holley EFI - 550-617N

HP EFI ECU & Harness Kits

Complete 99-04 4 Valve Ford Modular Engine Plug and Play Kit - Jetronic "Bosch Style" injector harness - Includes NTK Oxygen Sensor

Looking for a plug and play kit for your Ford Modular engine? The HP ECU allows you to accurately control the fuel and ignition of your engine plus much more! Is your cam too wild for a MAF? Power adders? You name it, and Holley EFI can handle it.

• Connectors for expanded Inputs and Outputs
• Complete plug and play kit includes HP ECU, NTK O2 sensor, MAP sensor, Coil Drivers and all necessary Harnesses
• Connectors for Holley Fuel Pressure and Oil Pressure sensors
• Designed specifically for 1999-2004 Ford Modular 4 Valve Engines
• Plug and play with factory actuators; Coils, Injectors, IAC
• Plug and play with factory sensors; Crank, Cam, TPS, Coolant Temp, etc
• The NTK Oxygen Sensor is recommended when using leaded or methanol fuels, high exhaust and forced induction applications or for highest precision feedback