Holley's Dominator EFI Vehicle Management System is built for non-emissions street and race engines, with optional transmission control, drive-by-wire throttle control, and dual wideband oxygen sensor inputs, giving the Dominator ECU nearly unlimited capability to control turbochargers, nitrous, water-methanol injection, and other power adders as its own data acquisition and control module. This kit supplies the universal main engine harness for domestic V8s — conventional push-rod Chevrolet and Chrysler engines — using EV1-style injectors.
Specifications:
- Engine application: Chevrolet Small and Big Block, Chrysler Small Block
- Injector connector type: EV1
- Harness scope: Main engine harness only — Dominator ECU, power harness, wideband oxygen sensor, injector harness, ignition adapter harness, and accessories are sold separately
- Certifications: ISO 8846, SAE J1171, and U.S. Coast Guard ignition protection and fire resistance requirements
- Part Number: 550-652
When using a transbrake, a relay or Holley's Transbrake input protection device (554-128) is required to protect the ECU from flyback voltage.
FAQ
Does this harness include the ECU?
No — Dominator EFI systems are sold a la carte. This listing is the main engine harness only; the ECU, power harness, wideband sensor, injector harness, and ignition adapter harness are purchased separately.
What injector connector does this harness use?
EV1-style injector connectors.
What engines is this harness designed for?
Domestic V8s, including conventional push-rod Chevrolet small and big block and Chrysler small block engines.
Do I need extra protection if I'm running a transbrake?
Yes — install a relay or Holley's Transbrake input protection device (554-128) to protect the ECU from flyback voltage when the transbrake releases.
