UNIVERSAL V8 MPFI HP ECU AND HARNESS KIT, NTK
ECU & Harness Kits
Looking for a plug and play alternative for your stock or built late model factory EFI engine? How about a replacement ECU for your older Holley C950? Holley has you covered. HP EFI ECU and harness kits are designed to be used with popular factory EFI engines as an alternative to the factory ECU and harness or as a replacement for your C950 ECU. The HP allows you to accurately control the fuel and ignition of your engine along with additional controls for nitrous, boost or water/meth.
550-604N Universal V8 MPFI
ECU, main harness, injector harness, and necessary sensors. Comes with NTK Wideband sensor instead of Bosch Wideband sensor
Injectors, fuel pumps, fuel lines
Holley EFI Wiring Manual