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    Sale!New!

    Holley EFI Holley EFI Lightweight Dominator ECU 554-114LW

    Vendor: Holley EFI
    SKU: GVMR_554-114LW
    Save $314
    Sale Price $2,509.95 Regular Price $2,823.95
    Fast Fulfillment: In-stock parts typically ship same day or next business day.
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    Holley EFI Dominator ECU utilizes a lighter potting material than the standard Dominator unit (reduces total weight by 1.8 lbs). This lightweight version is specifically intended for drag racing only. It is not recommended for use in high-heat conditions (under-hood mounting installations) and applications with high continuous current draw.


    Holley EFI Holley EFI Lightweight Dominator ECU 554-114LW


    Specifications:

    Description_INV ECU, DOMINATOR, V5, LIGHT WEIGHT, RED
    Description_ASC Dominator EFI systems are sold "a la carte," the following must be purchased for a complete system: ECU (includes software and programming cable), Main Power Harness, Wideband Oxygen Sensor, Main Engine Wiring Harness, Injector Wiring Harness, Ignition Adapter Harness and related Accessories. Certified to ISO 8846, SAE J1171 and United States Coast Guard Requirements for Ignition Protection and Fire Resistance.
    Description_ASC Recommended Gauge Digital Displays - 7" Digital Dash (PN 553-106) / 3.5" Touch Screen LCD (PN 553-108); 12.3" Pro Dash (PN 553-111) and 7" Race Dash (PN 553-106) features full gauge layout customization, and nearly limitless tuning options.
    Description_ASC When utilizing a Transbrake, it is mandatory to install either a relay or our Transbrake input protection device; Part number is 554-128. This will protect the ECU from any flyback voltage when the Transbrake is released.
    Description_DES Holley EFI Lightweight Dominator ECU
    Description_EXT The new standard in EFI with virtually unlimited capabilities.
    Description_EXT Integrated electronic transmission control, drive by wire throttle control, dual wideband oxygen sensor capability, extensive amount of inputs and outputs for various combinations, and more.
    Description_MKT Holley EFI Dominator ECU utilizes a lighter potting material than the standard Dominator unit (reduces total weight by 1.8 lbs). This lightweight version is specifically intended for drag racing only. It is not recommended for use in high-heat conditions (under-hood mounting installations) and applications with high continuous current draw.
    Description_FAB Lightweight ECU potting reduces overall ECU weight by 1.8 LBS or 34% (3.53 LBS); recommended for applications where saving ounces is critical.
    Description_FAB Works with 4, 6, 8, and 10 cylinder engines.
    Description_FAB Ignition Plug and Play with GM LS engines (non-VVT), GM HEI, Ford TFI, Coyote (non-VVT), 4.6/5.4 Mod Motor, Late Model HEMI, and magnetic and hall effect trigger.
    Description_FAB Custom settings can be configured to allow for use with many other applications.
    Description_FAB Integrated Electronic Transmission Control - Operates GM 4L60E and 4L80E transmissions, Ford AODE and 4R70W.
    Description_FAB Integrated Drive by Wire Throttle Body Control - Able to control two drive by wire throttle bodies, compatible with a number of DBW throttle bodies including GM, Chrysler, Ford, and Nissan.
    Description_FAB Integrated dual channel wide band oxygen sensor controls – Monitor both engine banks (NTK or Bosch sensors).
    Description_FAB Extensive amount of inputs and outputs allow for limitless combination of options. Allows for unit to be used as a complete data acquisition system as well.
    Description_FAB Twelve sequentially driven 8:2 peak and hold injector drivers, capable of driving up to 24 low or high impedance injectors as a standard feature. Multiple staged injector strategies.
    Description_FAB Twelve channel Distributorless Ignition (DIS) outputs capable of directly driving “Smart” ignition coils or Holley DIS coils. Will drive 2 wire coils with the addition of PN 554-112 high current coil driver module.
    Description_FAB Speed density, Alpha-N, Alpha-N Combination, and VE fueling strategies – Tuner has the option to select from a variety of load sensing strategies to meet their engine requirements or tuning preference.
    Description_FAB Individual cylinder fuel and spark control allows you to unlock your engine’s potential.
    Description_FAB Unique lb/hr based fueling strategy greatly simplifies and commonizes tuning.
    Description_FAB Advanced idle, closed loop, and enrichment strategies allow for very stable engine operation.
    Description_FAB 1-7 Bar MAP sensor capability – For naturally aspirated or boosted applications.
    Description_FAB Fuel Map and Learn Function Smoothing – Helps to smooth rough areas of the maps.
    Description_FAB Configurable User Password Protection – “Lock” your tune to prevent tampering.
    Description_FAB Self-tuning fuel table strategy greatly simplifies tuning process – The more you drive it, the more it learns.
    Description_FAB “Quick Start” strategies – For faster engine starting.
    Description_FAB Allows for use of common OEM sensors as well as custom sensor calibration input.
    Description_FAB Two channel knock control sensor inputs for both one or two wire knock sensors.
    Description_FAB Dedicated fuel and oil pressure inputs.
    Description_FAB Controls both stepper and PWM Idle Air Control (IAC) motors.
    Description_FAB 3 Rev Limiters – Choose between 4 options for each: Fuel Only, Spark Only, Fuel and Spark, or Soft.
    Description_FAB Traction Control – Allows power reduction via timing, nitrous percentage or boost (Requires Davis Technologies Holley Module).
    Description_FAB Store and select between four calibrations with Multi Map Selector (Part Number 558-407).
    Description_FAB ECU is fully potted and can be mounted in the engine compartment or interior – See images for dimensions.
    Description_FAB Sealed automotive and marine grade connectors.
    Description_FAB Fully featured nitrous control eliminates the need for a separate nitrous controller device.
    Description_FAB Can be configured NOS “Wet” or “Dry” with closed loop feedback.
    Description_FAB Progressive control based on time, RPM, or boost, requires part number is 554-111.
    Description_FAB Lean or rich safety cutoff.
    Description_FAB Full timing retard/control configurability per stage based on RPM or time.
    Description_FAB Uses Holley water/meth solenoids specially designed and calibrated for use with this EFI system to allow the user to enter water/meth flow as a percentage of fuel injector flow for water/meth tuning precision unmatched in the industry.
    Description_FAB TURBOCHARGER BOOST CONTROL
    Description_FAB Fully featured boost control capability eliminates the need for a separate boost control device
    Description_FAB Can be configured to control boost based on time, gear, speed, and manual inputs
    Description_FAB Gear based boost control configurable by several different methods
    Description_FAB “Boost Builder” functions offer the ability to assist building boost on the starting line by altering ignition timing, fueling, as well as nitrous oxide activation. Can also be used as an anti-lag function
    Description_FAB INPUTS AND OUTPUTS
    Description_FAB 13 - “Multi-Inputs” – Can be configured as a 0-5V sensor input, 0-20V sensor input, thermistor temperature input, or high or low voltage input
    Description_FAB 30 - 0-5V Sensor Inputs – Configures any 0-5V sensor as well as some can be used as switched high or low inputs
    Description_FAB 4 - Speed Inputs – Can be configured as a digital (square wave) input or an inductive input
    Description_FAB 20 - 12v PWM Outputs – Can be configured as PWM or switched 12V outputs. Rated at 2A maximum
    Description_FAB 16 - Ground PWM Outputs – Can be configured as PWM or switched ground outputs. Rated at 2A maximum
    Description_FAB All inputs and outputs are programmed using innovative new “Pin Mapping” strategy that allows inputs and outputs to be pinned as desired by the user, allowing for inputs and outputs to not be “wasted” by non-used dedicated functions
    Description_FAB Configurable for: dual cooling fans (including brushless fans that require PWM signal), dual fuel pumps, AC inputs, basic TCC lockup, and multiple timing retard inputs
    Description_FAB User programmable caution and warning outputs for all sensors
    Description_FAB ADVANCED TUNING ICF
    Description_FAB Fully User Configurable tables, 1D, 2D, 1D Per Gear, 2D Per Gear
    Description_FAB Tables allow for virtually unlimited dimensional tuning of fuel, spark, boost, nitrous and more
    Description_FAB User can modify fuel, timing, boost, nitrous, individual cylinder, ignition dwell, DBW, and more
    Description_FAB Parameters can be adjusted based on any input, sensor, or time.
    Boost Control Yes
    Brand Holley EFI
    Category Air and Fuel Delivery
    Category EFI - Fuel Injection
    Category Fuel Injection - EFI
    Coast Guard Approved Yes
    43 Male
    Dry Nitrous Control Yes
    Emission Code 3
    3390 Performance
    Height variable 1.00" to 1.84"
    Length 13.14" overall
    Mounting Bolt Pattern 12.13" x 6.10"
    30 Yes
    356 4
    Multi-Stage Nitrous Control Yes
    Product Type Dominator ECU - ECM - VCM
    Progressive Nitrous Control Yes
    2070 No
    44 Female
    User-Tuneable Yes
    Warning California Proposition 65
    Wet Nitrous Control Yes
    Width 6.10" overall
    Boost Control Yes
    Brand Holley EFI
    Category Air and Fuel Delivery
    Category EFI - Fuel Injection
    Category Fuel Injection - EFI
    Coast Guard Approved Yes
    43 Male
    Dry Nitrous Control Yes
    Emission Code 3
    3390 Performance
    Height variable 1.00" to 1.84"
    Length 13.14" overall
    Mounting Bolt Pattern 12.13" x 6.10"
    30 Yes
    356 4
    Multi-Stage Nitrous Control Yes
    Product Type Dominator ECU - ECM - VCM
    Progressive Nitrous Control Yes
    2070 No
    44 Female
    User-Tuneable Yes
    Warning California Proposition 65
    Wet Nitrous Control Yes
    Width 6.10" overall
    Description_INV ECU, DOMINATOR, V5, LIGHT WEIGHT, RED
    Description_ASC Dominator EFI systems are sold "a la carte," the following must be purchased for a complete system: ECU (includes software and programming cable), Main Power Harness, Wideband Oxygen Sensor, Main Engine Wiring Harness, Injector Wiring Harness, Ignition Adapter Harness and related Accessories. Certified to ISO 8846, SAE J1171 and United States Coast Guard Requirements for Ignition Protection and Fire Resistance.
    Description_ASC Recommended Gauge Digital Displays - 7" Digital Dash (PN 553-106) / 3.5" Touch Screen LCD (PN 553-108); 12.3" Pro Dash (PN 553-111) and 7" Race Dash (PN 553-106) features full gauge layout customization, and nearly limitless tuning options.
    Description_ASC When utilizing a Transbrake, it is mandatory to install either a relay or our Transbrake input protection device; Part number is 554-128. This will protect the ECU from any flyback voltage when the Transbrake is released.
    Description_DES Holley EFI Lightweight Dominator ECU
    Description_EXT The new standard in EFI with virtually unlimited capabilities.
    Description_EXT Integrated electronic transmission control, drive by wire throttle control, dual wideband oxygen sensor capability, extensive amount of inputs and outputs for various combinations, and more.
    Description_MKT Holley EFI Dominator ECU utilizes a lighter potting material than the standard Dominator unit (reduces total weight by 1.8 lbs). This lightweight version is specifically intended for drag racing only. It is not recommended for use in high-heat conditions (under-hood mounting installations) and applications with high continuous current draw.
    Description_FAB Lightweight ECU potting reduces overall ECU weight by 1.8 LBS or 34% (3.53 LBS); recommended for applications where saving ounces is critical.
    Description_FAB Works with 4, 6, 8, and 10 cylinder engines.
    Description_FAB Ignition Plug and Play with GM LS engines (non-VVT), GM HEI, Ford TFI, Coyote (non-VVT), 4.6/5.4 Mod Motor, Late Model HEMI, and magnetic and hall effect trigger.
    Description_FAB Custom settings can be configured to allow for use with many other applications.
    Description_FAB Integrated Electronic Transmission Control - Operates GM 4L60E and 4L80E transmissions, Ford AODE and 4R70W.
    Description_FAB Integrated Drive by Wire Throttle Body Control - Able to control two drive by wire throttle bodies, compatible with a number of DBW throttle bodies including GM, Chrysler, Ford, and Nissan.
    Description_FAB Integrated dual channel wide band oxygen sensor controls – Monitor both engine banks (NTK or Bosch sensors).
    Description_FAB Extensive amount of inputs and outputs allow for limitless combination of options. Allows for unit to be used as a complete data acquisition system as well.
    Description_FAB Twelve sequentially driven 8:2 peak and hold injector drivers, capable of driving up to 24 low or high impedance injectors as a standard feature. Multiple staged injector strategies.
    Description_FAB Twelve channel Distributorless Ignition (DIS) outputs capable of directly driving “Smart” ignition coils or Holley DIS coils. Will drive 2 wire coils with the addition of PN 554-112 high current coil driver module.
    Description_FAB Speed density, Alpha-N, Alpha-N Combination, and VE fueling strategies – Tuner has the option to select from a variety of load sensing strategies to meet their engine requirements or tuning preference.
    Description_FAB Individual cylinder fuel and spark control allows you to unlock your engine’s potential.
    Description_FAB Unique lb/hr based fueling strategy greatly simplifies and commonizes tuning.
    Description_FAB Advanced idle, closed loop, and enrichment strategies allow for very stable engine operation.
    Description_FAB 1-7 Bar MAP sensor capability – For naturally aspirated or boosted applications.
    Description_FAB Fuel Map and Learn Function Smoothing – Helps to smooth rough areas of the maps.
    Description_FAB Configurable User Password Protection – “Lock” your tune to prevent tampering.
    Description_FAB Self-tuning fuel table strategy greatly simplifies tuning process – The more you drive it, the more it learns.
    Description_FAB “Quick Start” strategies – For faster engine starting.
    Description_FAB Allows for use of common OEM sensors as well as custom sensor calibration input.
    Description_FAB Two channel knock control sensor inputs for both one or two wire knock sensors.
    Description_FAB Dedicated fuel and oil pressure inputs.
    Description_FAB Controls both stepper and PWM Idle Air Control (IAC) motors.
    Description_FAB 3 Rev Limiters – Choose between 4 options for each: Fuel Only, Spark Only, Fuel and Spark, or Soft.
    Description_FAB Traction Control – Allows power reduction via timing, nitrous percentage or boost (Requires Davis Technologies Holley Module).
    Description_FAB Store and select between four calibrations with Multi Map Selector (Part Number 558-407).
    Description_FAB ECU is fully potted and can be mounted in the engine compartment or interior – See images for dimensions.
    Description_FAB Sealed automotive and marine grade connectors.
    Description_FAB Fully featured nitrous control eliminates the need for a separate nitrous controller device.
    Description_FAB Can be configured NOS “Wet” or “Dry” with closed loop feedback.
    Description_FAB Progressive control based on time, RPM, or boost, requires part number is 554-111.
    Description_FAB Lean or rich safety cutoff.
    Description_FAB Full timing retard/control configurability per stage based on RPM or time.
    Description_FAB Uses Holley water/meth solenoids specially designed and calibrated for use with this EFI system to allow the user to enter water/meth flow as a percentage of fuel injector flow for water/meth tuning precision unmatched in the industry.
    Description_FAB TURBOCHARGER BOOST CONTROL
    Description_FAB Fully featured boost control capability eliminates the need for a separate boost control device
    Description_FAB Can be configured to control boost based on time, gear, speed, and manual inputs
    Description_FAB Gear based boost control configurable by several different methods
    Description_FAB “Boost Builder” functions offer the ability to assist building boost on the starting line by altering ignition timing, fueling, as well as nitrous oxide activation. Can also be used as an anti-lag function
    Description_FAB INPUTS AND OUTPUTS
    Description_FAB 13 - “Multi-Inputs” – Can be configured as a 0-5V sensor input, 0-20V sensor input, thermistor temperature input, or high or low voltage input
    Description_FAB 30 - 0-5V Sensor Inputs – Configures any 0-5V sensor as well as some can be used as switched high or low inputs
    Description_FAB 4 - Speed Inputs – Can be configured as a digital (square wave) input or an inductive input
    Description_FAB 20 - 12v PWM Outputs – Can be configured as PWM or switched 12V outputs. Rated at 2A maximum
    Description_FAB 16 - Ground PWM Outputs – Can be configured as PWM or switched ground outputs. Rated at 2A maximum
    Description_FAB All inputs and outputs are programmed using innovative new “Pin Mapping” strategy that allows inputs and outputs to be pinned as desired by the user, allowing for inputs and outputs to not be “wasted” by non-used dedicated functions
    Description_FAB Configurable for: dual cooling fans (including brushless fans that require PWM signal), dual fuel pumps, AC inputs, basic TCC lockup, and multiple timing retard inputs
    Description_FAB User programmable caution and warning outputs for all sensors
    Description_FAB ADVANCED TUNING ICF
    Description_FAB Fully User Configurable tables, 1D, 2D, 1D Per Gear, 2D Per Gear
    Description_FAB Tables allow for virtually unlimited dimensional tuning of fuel, spark, boost, nitrous and more
    Description_FAB User can modify fuel, timing, boost, nitrous, individual cylinder, ignition dwell, DBW, and more
    Description_FAB Parameters can be adjusted based on any input, sensor, or time.


    Shipping Policy

    Shipping Policy Last Updated: April 2026

    We're committed to getting your order to you as quickly and transparently as possible. Here's everything you need to know about how we ship.

    Order Cancellations

    Once an order is placed, cancellations are not guaranteed as orders are sent to fulfillment quickly. If you need to cancel, contact us immediately at sales@berryperformancesales.com. If a cancellation is possible, the buyer is responsible for any transaction fees incurred. If the order has already shipped, it cannot be cancelled and must go through our standard return process.

    Processing Time

    In-stock orders are typically processed and shipped within 1–2 business days of receiving payment, unless otherwise noted on the product page. Orders placed on weekends or holidays will be processed on the next business day.

    Shipping Costs

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    Estimated Delivery Times

    Domestic orders typically arrive within 1–7 business days after shipment, depending on your location and the carrier. Please note that delivery times are estimates and are not guaranteed. Delays due to weather, carrier volume, or other circumstances beyond our control may occur.

    Tracking Information

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    Shipping Address

    Please ensure your shipping address is accurate and complete before placing your order. If you realize an error after ordering, contact us immediately at sales@berryperformancesales.com — we will do our best to make the correction, but changes cannot be guaranteed once an order is in fulfillment. We are not responsible for orders shipped to incorrect or undeliverable addresses due to customer error.

    Please note: We are unable to ship to P.O. Boxes. Please provide a physical delivery address at checkout.

    Lost or Stolen Packages

    If your tracking shows your order as delivered but you have not received it, please take the following steps:

    • Check around your property and with neighbors
    • Confirm the shipping address on your order was correct
    • Contact the carrier directly with your tracking number

    If the issue remains unresolved, contact us at sales@berryperformancesales.com within 5 business days of the marked delivery date. We will work with you and the carrier to investigate. Berry Performance Sales is not responsible for packages confirmed as delivered by the carrier or for packages stolen after delivery.

    Damaged in Transit

    If your order arrives visibly damaged, please refer to our Returns & Refunds policy for instructions on how to report the issue. Carrier damage claims must be reported within 48 hours of delivery.

    International Shipping

    We do ship internationally! Because shipping costs, carrier options, and transit times vary significantly by destination, international orders require a custom quote prior to purchase. To request a shipping quote, contact us at sales@berryperformancesales.com with the following:

    • Your country and full delivery address
    • The item(s) you are interested in ordering

    We will respond with a shipping quote as quickly as possible. Please note that customs duties, import taxes, and any other fees charged upon delivery are the sole responsibility of the recipient and are not included in your shipping quote. We recommend checking with your local customs office before placing your order.

    Off-Road Use Disclaimer

    All products are sold for off-road use only unless otherwise specified. The buyer assumes full responsibility for installation and operation. Berry Performance Sales is not liable for any incidental, indirect, or consequential damages including engine failure, labor charges, or vehicle downtime resulting from the use of any product sold. By placing an order, you acknowledge and accept these terms.

    Questions?

    We're happy to help before, during, or after your purchase. Email: sales@berryperformancesales.com

    Berry Performance Sales reserves the right to update this policy at any time. Changes take effect immediately upon posting. It is the customer's responsibility to review the current policy at the time of purchase.

    Return Policy

    Returns & Refunds Last Updated: April 2026

    We want you to love what you ordered. If something isn't right, here's everything you need to know.

    30-Day Return Window

    You have 30 days from the date of purchase to initiate a return. After this window, we are unable to accept returns. We do not offer exchanges — all approved returns are refunded per the terms below.

    How to Initiate a Return

    To request a return, contact us at sales@berryperformancesales.com with your order number and reason for return. All returns must be approved by our team before any item is shipped back to us. Once your return has been approved, your item must be shipped within 10 days of approval. Items shipped without prior approval or outside this window will be refused and returned to sender.

    Return Conditions

    To be eligible for a return, items must be:

    • Unused and in original condition
    • In original packaging
    • Inclusive of all parts and accessories

    Custom ordered products are non-returnable. If you're unsure whether your item qualifies, contact us before purchasing.

    Once we receive your return, we will inspect the item before processing any refund. We reserve the right to deny or adjust your refund if the item is received in a condition that differs from what was originally shipped — including signs of use, missing parts, or damage that occurred after delivery.

    Fees to Know Upfront

    We believe in being transparent about costs:

    • Restocking Fee: 20% — deducted from all return refunds
    • Return Shipping: Buyer's responsibility on all standard returns
    • Cancellation (Installment/Payment Plan): 7% fee to cover transaction costs
    • Cancellation (Credit Card/PayPal): 3.5% processing fee

    Damaged or Defective Items

    If your order arrives damaged or defective, you must contact us within 48 hours of delivery at sales@berryperformancesales.com. Claims reported outside this window may not be eligible for resolution.

    When contacting us, please include:

    • Your order number
    • A description of the issue
    • Clear photos or video of the damage or defect

    If your item was damaged during shipping, this is handled as a carrier claim separate from our standard return process — we will assist you in filing that claim. Items confirmed to be defective due to a manufacturing or fulfillment error will have return shipping costs covered by Berry Performance Sales.

    Refunds

    Once we receive and inspect your return, refunds are processed within 3–5 business days back to your original payment method. You'll receive a confirmation once it's been issued.

    Questions?

    We're happy to help before, during, or after your purchase. Email: sales@berryperformancesales.com

    Berry Performance Sales reserves the right to update this policy at any time. Changes take effect immediately upon posting. It is the customer's responsibility to review the current policy at the time of purchase.

    Disclaimer

    All products are sold for off-road use only unless otherwise specified. Buyer assumes all responsibility for installation and operation. Seller is not liable for any incidental, indirect, or consequential damages — including engine failure, labor costs, or vehicle downtime — resulting from the use of any product sold.

    By making a purchase from Berry Performance Sales, you acknowledge and agree to abide by the terms and conditions of these Policies.

    For any questions or concerns, please contact us — we’re always happy to help.

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