Holley EFI Dominator EFI Engine Control Module - Wiring Harness - Transmission Harness - Drive-By-Wire - LS2 - GM LS-Series HASZ22SM but if you are running

but if you are running a Multi-Step Retard or Timing Controller

Vulcan Cut Ring

Choose from an Inside Cowl Mount Bracket for more centralized coverage

Looks Great On A Supercharger

Sizes 14"-18" in 1" increments

Holley EFI Dominator EFI Engine Control Module - Wiring Harness - Transmission Harness - Drive-By-Wire - LS2 - GM LS-Series HASZ22SM but if you are runningWhen utilizing a Transbrake, it is mandatory to install either a relay or, our Transbrake input protection device. P N 554 128. This will protect the ECU from any flyback voltage when the Transbrake is released. Dominator EFI systems are sold "a la carte". The following must be purchased for a complete system: ECU (includes software and programming cable), Main Power Harness, Wideband Oxygen Sensor, Main Engine Wiring Harness, Injector Wiring Harness,