Holley · Part 554-114
Holley EFI Dominator EFI ECU
Universal standalone ECU for 4, 6, 8 and 10-cylinder engines. Ignition plug-and-play with GM LS (non-VVT), GM HEI, Ford TFI, Coyote (non-VVT), 4.6/5.4 Mod Motor, late HEMI, plus magnetic/Hall triggers. Controls up to two DBW throttle bodies (GM, Chrysler, Ford, Nissan). Transmission control: GM 4L60E/4L80E, Ford AODE/4R70W. Any injector impedance. Harness chosen separately per engine.
$2,499.95
In stock in Corona. Free shipping in the continental US, or collect it at the shop.
No returns or exchanges on third-party hardware — the manufacturer’s warranty is the warranty. Returns policy
Emissions
What it is and what it fits
Universal standalone ECU for 4, 6, 8 and 10-cylinder engines. Ignition plug-and-play with GM LS (non-VVT), GM HEI, Ford TFI, Coyote (non-VVT), 4.6/5.4 Mod Motor, late HEMI, plus magnetic/Hall triggers. Controls up to two DBW throttle bodies (GM, Chrysler, Ford, Nissan). Transmission control: GM 4L60E/4L80E, Ford AODE/4R70W. Any injector impedance. Harness chosen separately per engine.
What it does
- Top of Holley's ECU range - built for turbo, nitrous and multi-power-adder race cars
- Pin-mapping lets any spare input or output be assigned to any function
- Integrated trans, DBW, boost, nitrous and water-meth control removes extra controllers
- Individual cylinder fuel and spark trim
- Tune can be password-locked against tampering
Fitted and tuned on our hub dyno, or shipped to you
Buy it and fit it yourself, or have us do it. We install, wire and calibrate Holley engine management in our Corona shop and tune it on a Mainline ProHub hub dyno, with the full sheet at the end. Shop labor is $265 an hour, quoted against your car; the calibration is priced on the standalone tuning page.
It is in stock in Corona and ships free anywhere in the continental US. Alaska and Hawaii are quoted by phone. If you would rather collect it, or have it waiting here for your install, say so at checkout.
Specifications
Holley 554-114
- Brand
- Holley
- Part number
- 554-114
- Injector drivers
- 12 sequential 8:2 peak-and-hold drivers; up to 24 low- or high-impedance injectors
- Ignition outputs
- 12 DIS channels for smart coils / Holley DIS coils (2-wire coils need 554-112 driver)
- Inputs
- 13 multi-inputs, 30 x 0-5V sensor inputs, 4 speed inputs
- Outputs
- 20 x 12V PWM + 16 x ground PWM, 2A each
- Wideband
- Dual-channel (Bosch or NTK), one per bank
- MAP
- 1 to 7 bar capable
- Data logger
- Internal, 4 GB
- Nitrous
- Up to 8 stages, wet/dry, progressive
- Other control
- Boost, water/methanol (2 nozzles), traction control, knock (2 channel), stepper or PWM IAC
- Connectors
- Sealed, 174 terminals; fully potted case, 5.6 lb, 13.14 x 6.10 in
Questions
Before you buy
Is this the price other dealers charge?
Yes. $2,499.95 is the price authorised Holley dealers advertise, and DEFI is an authorised Holley dealer. Shipping in the continental US is free on top of that.
Will it fit my engine?
Read the fitment above against your engine, sensors, injectors and throttle before you buy. If anything is unclear — a part number, a connector, a transmission — call us first. That conversation is free; a wrong unit is not.
Can I return it if it is the wrong one?
No. There are no returns or exchanges on third-party hardware once it ships — the manufacturer’s warranty is the warranty. That is why we would rather answer the fitment question on the phone before you order.
Is it street legal?
Holley publishes no CARB Executive Order for this kit. It is sold for racing and for vehicles that are not emissions-controlled: it is not legal on a pollution-controlled vehicle registered in California, and a vehicle running it will not pass a smog inspection. We are not going to imply otherwise.
Can you tune it for me?
Yes. We calibrate Holley standalones on our hub dyno in Corona, and we can review logs remotely if the car is somewhere else.