Holley 550-617 HP EFI ECU & Harness Kits
- This item ships directly from the manufacturer. It may take an additional 2 business days for Holley to ship this item.
- This item ships via Ground Shipping only. Expedited and Air shipping options are not available.
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.
- Designed specifically for 1999-2004 Ford Modular 4 Valve Engines
- Plug and play with factory sensors; Crank, Cam, TPS, Coolant Temp, etc
- Plug and play with factory actuators; Coils, Injectors, IAC
- Connectors for Holley Fuel Pressure and Oil Pressure sensors
- Connectors for expanded Inputs and Outputs
- Complete plug and play kit includes HP ECU, Bosch Wideband O2 sensor, MAP sensor, Coil Drivers and all necessary Harnesses
More Like This
Holley 550-616 HP EFI ECU & Harness Kits
Painless Wiring 60502 1992-1997 GM LT1 Engine Harness
Painless Wiring 60508 1999-2002 GM LS1 Engine Harness
Painless Wiring 60127 LS1 Coil Pack Relocation Harness
Painless Wiring 60509 1999-2002 GM LS1 Engine Harness, Extended
Speedway 1994-1997 LT1 Engine Wiring Harness
Speedway 1999-2003 Vortec V8 Wiring Harness
Speedway 1985-1992 GM TBI Engine EFI Wiring Harness
Speedway 1997-1998 LS1 Wiring Harness, Extended
Speedway 2004-2008 Vortec V8 Wiring Harness