HP ECU AND HARNESS LS2/3/7 WITH 58X CRANK SENSOR & USCAR INJ. HARNESS, NTK

Holley

$ 1,917.95 $ 2,131.95
Part# HLY-550-603N

ECU & Harness Kits Looking for a plug and play alternative for your stock or built GM LS2/3/7 late model factory EFI engine? Holley has you covered. HP EFI ECU and harness kits are designed to be used with popular factory GM LS2/3/7 EFI engines as an alternative to the factory ECU and harness.

550-603N GM LS2/3/7 with USCAR (EV6 Style) connector on inj. harness (uses factory GM coil harnesses) - 58x crank sensor
Includes:
ECU, main harness, injector harness, and necessary sensors. Comes with NTK Wideband sensor instead of Bosch Wideband sensor  

Not included:
Injectors, fuel pumps, fuel lines and factory GM coil harnesses

Holley EFI Wiring Manual