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    Sale!

    Holley EFI Dominator EFI Kit - LS1 Main Harness w/ Trans and DBW with EV1 Injector Harness 550-657

    Vendor: Holley EFI
    SKU: GVMR_550-657
    Save $438
    Sale Price $3,499.95 Regular Price $3,937.95
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    Dominator® EFI Vehicle Management Systems are intended for non-emissions street and racing engine applications. In addition to the transmission control, drive by wire, and dual wideband oxygen sensor options, Dominator® systems have nearly unlimited capabilities to control any power adder, input, or output you can throw at them. Need to run a turbocharged, nitrous injected 8 cylinder running water-methanol injection? No problem with Dominator® EFI. How about control a 4L80E transmission as well as the fuel and spark on your street rod? No problem. There are also enough inputs and outputs to allow the Dominator® VMSs to serve as their own data acquisition and control module. The Dominator® VMS will eliminate the need for additional controllers as they are all contained in this one unit. The only thing limiting the Dominator® Vehicle Management System is your imagination!


    Holley EFI Dominator EFI Kit - LS1 Main Harness w/ Trans and DBW with EV1 Injector Harness 550-657


    Specifications:

    10429 Yes
    10431 Yes
    Brand Holley EFI
    10423 Yes
    Category Fuel Injection - EFI
    Coast Guard Approved Yes
    10438 Yes
    10430 Yes
    10442 Yes
    10418 Yes
    10428 Yes
    Emission Code 3
    Engine GM LS1/LS2/LS6
    10433 Yes
    7246 No
    10417 No
    906 No
    10425 No
    8922 No
    3390 Performance
    Height variable 1.00" to 1.84"
    10422 Yes
    10432 Yes
    9780 No
    10427 Yes
    Length 13.14" overall
    Mounting Bolt Pattern 12.13"x 6.10"
    10420 Yes
    Product Type Dominator ECU - ECM - VCM
    10421 Yes
    10434 Yes
    918 No
    10426 Yes
    10435 Yes
    Warning California Proposition 65
    10419 Yes
    Width 6.10" overall
    10429 Yes
    10431 Yes
    Brand Holley EFI
    10423 Yes
    Category Fuel Injection - EFI
    Coast Guard Approved Yes
    10438 Yes
    10430 Yes
    10442 Yes
    10418 Yes
    10428 Yes
    Emission Code 3
    Engine GM LS1/LS2/LS6
    10433 Yes
    7246 No
    10417 No
    906 No
    10425 No
    8922 No
    3390 Performance
    Height variable 1.00" to 1.84"
    10422 Yes
    10432 Yes
    9780 No
    10427 Yes
    Length 13.14" overall
    Mounting Bolt Pattern 12.13"x 6.10"
    10420 Yes
    Product Type Dominator ECU - ECM - VCM
    10421 Yes
    10434 Yes
    918 No
    10426 Yes
    10435 Yes
    Warning California Proposition 65
    10419 Yes
    Width 6.10" overall
    Description_ABR Dominator
    Description_SHO Harness Kit
    Description_INV DOMINATOR EFI KIT - LS1 W/ TRANS AND DBW
    Description_ASC When utilizing a Transbrake, it is mandatory to install either a relay or, our Transbrake input protection device. P/N 554-128. This will protect the ECU from any flyback voltage when the Transbrake is released.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 Accessories.Certified to ISO 8846, SAE J1171 & United States Coast Guard Requirements for Ignition Protection & Fire Resistance.
    Description_DES Dominator EFI Kit - LS1 Main Harness w/ Trans and DBW with EV1 Injector Harness
    Description_EXT Fits GM LS 24x Crank, 1x Cam - LS1/LS6 style Engines with EV1 Injectors a 4L60/80E Transmission, and a DBW Throttle Body.
    Description_MKT Dominator® EFI Vehicle Management Systems are intended for non-emissions street and racing engine applications. In addition to the transmission control, drive by wire, and dual wideband oxygen sensor options, Dominator® systems have nearly unlimited capabilities to control any power adder, input, or output you can throw at them. Need to run a turbocharged, nitrous injected 8 cylinder running water-methanol injection? No problem with Dominator® EFI. How about control a 4L80E transmission as well as the fuel and spark on your street rod? No problem. There are also enough inputs and outputs to allow the Dominator® VMSs to serve as their own data acquisition and control module. The Dominator® VMS will eliminate the need for additional controllers as they are all contained in this one unit. The only thing limiting the Dominator® Vehicle Management System is your imagination!
    Description_FAB Optional Digital Displays - 7" Digital Dash (PN 553-106) / 3.5" Touch Screen LCD (PN 553-108)
    Description_FAB Allows for two nozzles to be controlled
    Description_FAB 1-7 Bar MAP sensor capability – For naturally aspirated or boosted applications
    Description_FAB Can be configured “Wet” or “Dry” with closed loop feedback
    Description_FAB Integrated drive by wire throttle body control - Can control two drive by wire throttle bodies. Compatible with a number of DBW throttle bodies including GM, Chrysler, Ford, and Nissan
    Description_FAB Can be configured to control boost based on time, gear, speed, and manual inputs
    Description_FAB Racepak Integration Module Available.
    Description_FAB Lean or rich safety cutoff
    Description_FAB Progressive control based on time, RPM, or boost, requires part # 554-111
    Description_FAB Data logger - Smoothing, multiple graph view, pre-defined notes fields and more..
    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 DATA VISUALIZATION TOOLS
    Description_FAB Full timing retard/control configurability per stage based on RPM or time
    Description_FAB Fully Configurable lap top Gauge Panel – Life-like gauge cluster on your laptop screen
    Description_FAB Integrated dual channel wide band oxygen sensor controls – For monitoring both engine banks (NTK or Bosch sensors)
    Description_FAB 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_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 HARDWARE
    Description_FAB Complete control of pump activation, and low system safety features
    Description_FAB Sealed automotive and marine grade connectors
    Description_FAB Self-tuning fuel table strategy greatly simplifies tuning process – The more you drive it, the more it learns
    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 Kits include the following: Dominator ECU, USB cable, ECU Power Harness, Engine Main Harness, EV1 Injector Harness, Bosch Wideband, ECU mounting hardware
    Description_FAB Fuel Map and Learn Function Smoothing – Helps to smooth rough areas of the maps
    Description_FAB Strip Chart – For real-time data viewing
    Description_FAB Fully featured boost control capability eliminates the need for a separate boost control device
    Description_FAB INTEGRATED WATER/METHANOL INJECTION CONTROL
    Description_FAB Fully featured nitrous control eliminates the need for a separate nitrous controller device
    Description_FAB Store and select between four calibrations with Multi Map Selector (Part Number 558-407)
    Description_FAB TURBOCHARGER BOOST CONTROL
    Description_FAB Two channel knock control sensor inputs for both one or two wire knock sensors
    Description_FAB ECU is fully potted and can be mounted in the engine compartment or interior – See images for dimensions
    Description_FAB Individual cylinder fuel and spark control allows you to unlock your engine’s potential
    Description_FAB “Quick Start” strategies – For faster engine starting
    Description_FAB Data Logger –Analyze and export your data with sophisticated, but user friendly tools – Internal logger has 4 GB of memory
    Description_FAB Dominator EFI base kits come in several product variations to fit most popular domestic V8 engine applications such as; LS, SBC/BBC, SBF, BBF, and Chrysler engines
    Description_FAB 8 STAGE NITROUS OXIDE CONTROL
    Description_FAB Allows for use of common OEM sensors as well as custom sensor calibration input
    Description_FAB Integrated electronic transmission control - Operates GM 4L60E and 4L80E transmissions, Ford AODE and 4R70W with more to come in the future
    Description_FAB Nozzles available from 400 to 1000 cc/min
    Description_FAB Gear based boost control configurable by several different methods
    Description_ABR Dominator
    Description_SHO Harness Kit
    Description_INV DOMINATOR EFI KIT - LS1 W/ TRANS AND DBW
    Description_ASC When utilizing a Transbrake, it is mandatory to install either a relay or, our Transbrake input protection device. P/N 554-128. This will protect the ECU from any flyback voltage when the Transbrake is released.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 Accessories.Certified to ISO 8846, SAE J1171 & United States Coast Guard Requirements for Ignition Protection & Fire Resistance.
    Description_DES Dominator EFI Kit - LS1 Main Harness w/ Trans and DBW with EV1 Injector Harness
    Description_EXT Fits GM LS 24x Crank, 1x Cam - LS1/LS6 style Engines with EV1 Injectors a 4L60/80E Transmission, and a DBW Throttle Body.
    Description_MKT Dominator® EFI Vehicle Management Systems are intended for non-emissions street and racing engine applications. In addition to the transmission control, drive by wire, and dual wideband oxygen sensor options, Dominator® systems have nearly unlimited capabilities to control any power adder, input, or output you can throw at them. Need to run a turbocharged, nitrous injected 8 cylinder running water-methanol injection? No problem with Dominator® EFI. How about control a 4L80E transmission as well as the fuel and spark on your street rod? No problem. There are also enough inputs and outputs to allow the Dominator® VMSs to serve as their own data acquisition and control module. The Dominator® VMS will eliminate the need for additional controllers as they are all contained in this one unit. The only thing limiting the Dominator® Vehicle Management System is your imagination!
    Description_FAB Optional Digital Displays - 7" Digital Dash (PN 553-106) / 3.5" Touch Screen LCD (PN 553-108)
    Description_FAB Allows for two nozzles to be controlled
    Description_FAB 1-7 Bar MAP sensor capability – For naturally aspirated or boosted applications
    Description_FAB Can be configured “Wet” or “Dry” with closed loop feedback
    Description_FAB Integrated drive by wire throttle body control - Can control two drive by wire throttle bodies. Compatible with a number of DBW throttle bodies including GM, Chrysler, Ford, and Nissan
    Description_FAB Can be configured to control boost based on time, gear, speed, and manual inputs
    Description_FAB Racepak Integration Module Available.
    Description_FAB Lean or rich safety cutoff
    Description_FAB Progressive control based on time, RPM, or boost, requires part # 554-111
    Description_FAB Data logger - Smoothing, multiple graph view, pre-defined notes fields and more..
    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 DATA VISUALIZATION TOOLS
    Description_FAB Full timing retard/control configurability per stage based on RPM or time
    Description_FAB Fully Configurable lap top Gauge Panel – Life-like gauge cluster on your laptop screen
    Description_FAB Integrated dual channel wide band oxygen sensor controls – For monitoring both engine banks (NTK or Bosch sensors)
    Description_FAB 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_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 HARDWARE
    Description_FAB Complete control of pump activation, and low system safety features
    Description_FAB Sealed automotive and marine grade connectors
    Description_FAB Self-tuning fuel table strategy greatly simplifies tuning process – The more you drive it, the more it learns
    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 Kits include the following: Dominator ECU, USB cable, ECU Power Harness, Engine Main Harness, EV1 Injector Harness, Bosch Wideband, ECU mounting hardware
    Description_FAB Fuel Map and Learn Function Smoothing – Helps to smooth rough areas of the maps
    Description_FAB Strip Chart – For real-time data viewing
    Description_FAB Fully featured boost control capability eliminates the need for a separate boost control device
    Description_FAB INTEGRATED WATER/METHANOL INJECTION CONTROL
    Description_FAB Fully featured nitrous control eliminates the need for a separate nitrous controller device
    Description_FAB Store and select between four calibrations with Multi Map Selector (Part Number 558-407)
    Description_FAB TURBOCHARGER BOOST CONTROL
    Description_FAB Two channel knock control sensor inputs for both one or two wire knock sensors
    Description_FAB ECU is fully potted and can be mounted in the engine compartment or interior – See images for dimensions
    Description_FAB Individual cylinder fuel and spark control allows you to unlock your engine’s potential
    Description_FAB “Quick Start” strategies – For faster engine starting
    Description_FAB Data Logger –Analyze and export your data with sophisticated, but user friendly tools – Internal logger has 4 GB of memory
    Description_FAB Dominator EFI base kits come in several product variations to fit most popular domestic V8 engine applications such as; LS, SBC/BBC, SBF, BBF, and Chrysler engines
    Description_FAB 8 STAGE NITROUS OXIDE CONTROL
    Description_FAB Allows for use of common OEM sensors as well as custom sensor calibration input
    Description_FAB Integrated electronic transmission control - Operates GM 4L60E and 4L80E transmissions, Ford AODE and 4R70W with more to come in the future
    Description_FAB Nozzles available from 400 to 1000 cc/min
    Description_FAB Gear based boost control configurable by several different methods


    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

    Shipping costs are calculated at checkout based on the shipping method selected, package weight and dimensions, and destination address. You can review all shipping costs before finalizing your purchase.

    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

    Once your order ships, you will receive a confirmation email with tracking information. Use this to monitor your package's progress. If your tracking has not updated within 48 hours of receiving your confirmation email, please contact us and we'll look into it.

    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
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    • 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.

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    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.

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    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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