Dominator EFI Vehicle Management Systems are built for non-emissions street and racing engines, with transmission control, drive-by-wire, and dual wideband oxygen sensor options that give the ECU nearly unlimited capability to control any power adder, input, or output. This kit provides the main and sub harnesses for conventional push rod Chevrolet and Chrysler engines running coil-on-plug (COP) ignition and EV1 injectors, eliminating the need for additional standalone controllers.
Key Features:
- Integrated drive-by-wire throttle body control for two DBW throttle bodies (GM, Chrysler, Ford, and Nissan compatible)
- Two-nozzle progressive nitrous oxide control, 8 stages, by time, RPM, or boost (requires part 554-111)
- Lean or rich safety cutoff
- 1-7 Bar MAP sensor capability for naturally aspirated or boosted applications
- Two-channel knock control, compatible with 1- or 2-wire knock sensors
- Onboard data logger with smoothing, multiple graph views, and notes fields; 4 GB internal memory
- Integrated electronic transmission control for GM 4L60E/4L80E and Ford AODE/4R70W
- Integrated dual-channel wideband oxygen sensor control for both engine banks (NTK or Bosch)
- Individual cylinder fuel and spark control
- Self-tuning fuel table strategy with fuel map smoothing
- ECU is fully potted and can be mounted in the engine bay or interior
- Sealed automotive and marine-grade connectors
- Fully featured turbocharger boost control with configurable timing retard per stage
- Integrated water/methanol injection control using Holley-calibrated solenoids
- Optional digital displays: 7" Digital Dash (553-106) or 3.5" Touch Screen LCD (553-108)
- Racepak Integration Module available
Specifications:
- Engine Platform: Chevy Small and Big Block
- Ignition Type: Coil-on-Plug (COP)
- Injector Connector: EV1
- Kit Includes: Dominator ECU, USB cable, ECU power harness, engine main harness, EV1 injector harness, Bosch wideband oxygen sensor, ECU mounting hardware
- MAP Sensor Range: 1-7 Bar
- ECU Dimensions: 13.14" length x 6.10" width, height variable 1.00"-1.84"
- Mounting Bolt Pattern: 12.13" x 6.10"
- Certification: ISO 8846, SAE J1171 & U.S. Coast Guard ignition protection and fire resistance requirements
- Part Number: 550-654
Dominator EFI systems are sold à la carte — a complete system requires the ECU, main power harness, wideband oxygen sensor, engine main harness, injector harness, ignition adapter harness, and accessories, each purchased separately as needed. If running a transbrake, Holley requires a relay or its Transbrake input protection device (P/N 554-128) to protect the ECU from flyback voltage when the transbrake releases.
FAQ
What engines does this harness kit fit?
Conventional push rod Chevrolet and Chrysler engines running coil-on-plug ignition and EV1 injectors.
What's included in the kit?
The Dominator ECU, USB programming cable, ECU power harness, engine main harness, EV1 injector harness, Bosch wideband oxygen sensor, and ECU mounting hardware.
Can this control a transmission?
Yes — the Dominator ECU offers integrated electronic transmission control for GM 4L60E/4L80E and Ford AODE/4R70W transmissions.
Does this system support boost or nitrous control?
Yes. It includes fully featured turbocharger boost control and 8-stage progressive nitrous oxide control (nitrous staging requires part 554-111).
Do I need anything else to run this on a transbrake car?
Yes — Holley requires a relay or its Transbrake input protection device (P/N 554-128) to protect the ECU from flyback voltage when the transbrake releases.
Is this a complete standalone EFI system by itself?
Dominator EFI is sold à la carte. This kit provides the ECU, main harness, injector harness, and wideband sensor — additional accessories like a digital dash or transbrake protection device are purchased separately depending on your build.
