Holley EFI Dominator EFI Engine Control Module - Wiring Harness - Transmission Harness - Drive-By-Wire - LS1/LS6 - GM LS-Series Metric Plugs 5/16 / 3/8 in Rocker

5/16 / 3/8 in Rocker Arm Studs

Many are performance enthusiasts that build

Dial in as much spark advance as conditions permit-add more advance under light load conditions to improve throttle response and fuel economy

The Hyperco/ICP Hydraulic Load Centering Spring Perches substantially improve performance by allowing the spring forces to remain centered on the damper and eliminate lateral loads

Adjustable mirror lens pivots in the housing for optimum driver visibility

Holley EFI Dominator EFI Engine Control Module - Wiring Harness - Transmission Harness - Drive-By-Wire - LS1/LS6 - GM LS-Series Metric Plugs 5/16 / 3/8 in RockerWhen 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,