HP ECU AND HARNESS FOR GM TPI AND HOLLEY STEALTH RAM
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.
550-601 GM TPI and Holley Stealth Ram kit
ECU, main harness, injector harness, HEI adapter harness and necessary sensors.
Injectors, fuel pumps, fuel lines
Holley EFI Wiring Manual