HP EFI ECU & Harness Kits - 550-605 fenders-and-flares more aggressive exhaust note than

more aggressive exhaust note than most OE (Original Equipment) mufflers

It installs cleanly and flush with the rear window and creates a leak free seal with the included RTV silicone

and target Closed Loop AFRadjustable through included 3

All lines are CNC bent and are flared Read to Install

HP EFI ECU & Harness Kits - 550-605 fenders-and-flares more aggressive exhaust note thanOverview: 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