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Home Ignitions & Electrical Holley Dominator EFI Vehicle Management Systems 554-114LW
Holley Terminator X Engine Management Systems 550-1601
Holley Terminator X Engine Management Systems 550-1601 $2,326.00
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Holley Dominator EFI Vehicle Management Systems 554-114LW

$2,337.00

Engine Management Systems, Dominator EFI, Lightweight ECU, Up to 24-Injectors, 12-Coils, Digital/Analog Input, Drive-by-Wire, VVT, Trans Control, Each

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Category: Ignitions & Electrical
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Description

Overview

Brand: Holley
Manufacturer’s Part Number: 554-114LW
Part Type: Engine Management Systems
Product Line: Holley Dominator EFI Vehicle Management Systems
Summit Racing Part Number: HLY-554-114LW
UPC: 090127130186
Transmission Controller Included: Yes
High Impedence Injectors: Up to 24
Low Impedence Injectors: Up to 24
Coils: Up to 12
Digital Inputs: 13
Analog Inputs: 30
VR/Mag Inputs: Up to 4
Wideband Controller: Yes
Wideband Channels: 2
CANBUS Enabled: Yes
CANBUS Networks: 1
Knock Control: Yes
Knock Channels: 2
Drive-By-Wire Capable: Yes
Drive-By-Wire Channels: 2
VVT Control: Yes
VVT Channels: 2
Boost Control: Yes
Nitrous Control: Yes
Traction Control: Yes
Launch Control: No
Engine Protection: Yes
Flex Fuel Compatible: No
Multi-fuel Capable: No
Data Logger: Yes
Oxygen Sensor Included: No
Display Included: No
Handheld Controller Included: No
Remanufactured: No
Quantity: Sold individually.
Notes: Please see the “charts and guides” tab for a complete guide for building a Holley EFI system.

Holley Dominator EFI Vehicle Management Systems

Holley Dominator EFI vehicle management systems are intended for all engine applications, from street to high-end racing. They have nearly unlimited capabilities to control any power adder, input, or output that you can throw at them.

Features include:

* 12 sequentially driven 8:2 peak and hold injector drivers capable of driving up to 24 low or high-impedance injectors
* 12-channel distributorless ignition outputs capable of directly driving smart ignition coils or Holley DIS coils
* Plug-and-play control of factory GM 24x and 58x LSX engines
* Integrated electronic transmission control–currently can control GM 4L60E and 4L80E
* Integrated dual channel wideband oxygen sensor controls, work with NTK or Bosch sensors
* Integrated drive by wire throttle body control, can control two drive by wire throttle bodies
* 4-stage progressive nitrous oxide controller
* Turbo boost control
* Integrated water/methanol injection control
* Integrated data acquisition and control allowed with massive amount of programmable inputs and outputs
* Internal data logging standard with a huge 2 GB of memory
* Self-tuning fuel table strategy greatly simplifies tuning process
* Store and change between four calibrations
* Individual cylinder fuel and spark control allows you to unlock your engine’s potential

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Effective Date: August 9, 2025

At X Factors Motorsports, we are committed to delivering your order quickly, securely, and affordably.


1. Processing Time

  • Orders are typically processed within 1–2 business days after payment is confirmed.

  • Orders placed on weekends or holidays will be processed on the next business day.


2. Delivery Times

  • Domestic Shipping (United States): Delivery takes 5–7 business days from the date of shipment.

  • International Shipping: Delivery times vary by destination and may take 7–21 business days depending on customs processing and local delivery services.


3. Shipping Rates

  • United States: Free standard shipping on all orders.

  • International: Shipping costs are calculated at checkout based on the delivery address, package weight, and destination country.


4. Carriers Used

We ship orders using trusted carriers such as UPS, FedEx, USPS, and DHL to ensure reliable delivery. Tracking numbers are provided for all shipments.

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    At X Factors Motorsports, we specialize in high-performance engines, outboards, and premium automotive equipment. With expert support, fast shipping, and trusted brands, we help builders, racers, and enthusiasts power their passion — one project at a time.

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