Holley Dominator EFI ECU (554-114)
The Holley Dominator EFI ECU (554-114) is a professional wire-in engine control unit (ECU) from Holley. It has 24 injector and 12 ignition outputs, support for up to 12 cylinders, 2 drive-by-wire throttle channels, 2 onboard wideband lambda inputs and knock control. List price is US$2,500. 10 sellers list it from US$2,163 to US$3,836.
Prices checked . Specs from Holley's published data.
Key specs
DBW = drive-by-wire throttle channels · λ wideband = onboard wideband lambda (oxygen sensor) inputs · CAN = controller area network buses.
Features
- ✓Drive-by-wire
- ✓Onboard wideband
- ✓Knock control
- ✓Flex fuel
- ✓Traction control
- ✓Launch control
- ✓Boost control
- ✕Gearbox control
- ✓Onboard logging
- ✕Ethernet
- ✓USB
- ✕Built-in display
✓ published · ✕ not offered · ? not published. Some features, like traction control and launch control, mean different things by brand. See the glossary.
Details
- Highlights
- 12 P&H drivers, dual DBW, dual wideband, 4L60E/4L80E/AODE/4R70W trans control, 20 PWM outputs
- Software
- Holley EFI V5 software, free
- Logging
- 4GB internal
- Links
- Product page ↗
- Tuning
- Find a Holley EFI tuner with a dyno
- Maker
- Holley: history, software and every model
Where to buy the Dominator EFI ECU (554-114)
10 sellers found
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Prices as shown on each seller's site on , in their own currency, converted at 14 Oct 2026 rates. Shipping, import duty and tax vary. Check with the seller before you buy.
