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Holley Performance 554-114 Dominator EFI ECU

4734788 - 554-114

Custom Built To Order - For Complete System Wideband Oxygen Sensors/Main Wiring Harness/Injector Wiring Harness/Ignition Adapter Harness/Accessories Required

554-114 Dominator EFI ECU Holley Performance

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Holley Performance - Dominator EFI ECU - Part#: 554-114 Features:

  • Simple Installation - Plug And Play
  • Significantly More Functionality Than Other Competitive ECUs
  • Laptop Programmable ECU Includes Many Base Maps For Easy Use
  • For Anything That Needs Simple And Powerful ECU/Harness Solution
  • Self Tune Fuel Strategy More Time Enjoying Your Vehicle Power
  • ECU Fully Potted/Can Mount In The Engine Compartment Or Interior
  • Sealed Automotive And Marine Grade Connectors
  • 1-5 Bar Map Sensor Capability
  • 5.7 Touchs

View the Full List of Automotive Applications »

Below is an abbreviated list of applications for the Dominator EFI ECU.


Holley has been the undisputed leader in fuel systems for over 100 years. Holley carburetors have powered every NASCAR Sprint Cup team and nearly every NHRA Pro–Stock champion for four decades. Now, Holley EFI is dominating the performance world as well as our products for GM's LS engine. Holley's products also include performance fuel pumps, intake manifolds & engine dress–up products for street performance, race and marine applications. As a single solution, or partnered with products from other Holley companies - Hooker Headers, Flowtech Exhaust, NOS Nitrous, Weiand, Earl's Performance Plumbing, or Diablosport - Holley products can give you the edge you need over the competition.

Shipping Information

  • Item Requires Shipping
  • 6.5 lbs.
  • W8.5000” x H4.2500” x L16.7500”

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