Skip to Product Info
    • 550-93719268.jpg
    • caps1966.jpg
    • injectorid1978.png
    • terminatorxdems_21975.jpg
    • wire21966.jpg
    • Terminator X - Dimensioned Drawing - Side View.jpg
    • Terminator X - Dimensioned Drawing - Top View.jpg
    • Terminator X - Dimensioned Drawing - Side View.jpg
    • Terminator X - Dimensioned Drawing - Top View.jpg
    • 550-937_01_P04_KIT.jpg
    • 550-937_02_P01_FRO.jpg
    • 550-937_03_P01_KIT.jpg
    • 550-937_04_P05_KIT.jpg
    • 550-937_05_P01_KIT.jpg
    • 550-937_06_P01_KIT.jpg
    • 550-937_07_P01_KIT.jpg
    • 550-937_08_P01_ANG.jpg
    • 550-937_09_P05_KIT.jpg
    • 550-937_10_P05_ANG.jpg
    Sale!

    Holley Terminator X, Ford 302W/351W/460, EV1 | 550-937

    Vendor: Holley EFI
    Part Number: 550-937
    Save $200
    Sale Price $1,599.95 Regular Price $1,799.95

    Available to order. In-stock orders typically ship in 1 to 2 business days.

    Not sure it fits your vehicle?
    Email sales@berryperformancesales.com with your year, make, model and engine, and we'll help you check fitment before you order.
    Fast Fulfillment: In-stock orders typically ship within 1 to 2 business days.
    Free Shipping on Orders Over $99 | Excludes freight shipments
    International Shipping Available: email sales@berryperformancesales.com for a quote.
    Payment & Security

    Secure, encrypted checkout. Card details go straight to the payment processor and are never stored by us.

    • Amazon
    • American Express
    • Apple Pay
    • Diners Club
    • Discover
    • Google Pay
    • Mastercard
    • PayPal
    • Shop Pay
    • Venmo
    • Visa
    Share to:

    Terminator X brings complete standalone engine control to conventional Ford V8 engines like the 302W, 351W, and 460 Big Block, replacing a factory ECU or pre-programmed chip with real-time fuel learn and Holley EFI's race-proven tuning technology. It comes fully loaded with base maps for common Ford V8 combinations to get you on the road fast.

    Key Features:

    • Plug-and-play control for Ford V8 engines such as the 302W, 351W, or 460 Big Block
    • Includes Ford-spaced EV1 injector harness
    • High-impedance injector drivers safely power most stock and Holley EFI injectors
    • Bosch LSU 4.9 wideband oxygen sensor included for accurate AFR feedback
    • Built-in 1-bar MAP sensor with vacuum hose adapters (1/8, 1/4, and 3/16 in.); can be disabled in favor of an external MAP sensor for boosted applications
    • Plug-and-play ignition compatible with Dual Sync and HyperSpark distributors (558-323 adapter required for HyperSpark)
    • 4 programmable inputs for extra sensors, nitrous triggers, or a trans brake
    • Boost control strategies: vs. time, vs. gear, vs. RPM, vs. speed, plus boost safeties
    • Single-channel wet or dry progressive nitrous control with rich/lean safeties
    • Advanced tables: 4x 1D, 1x 1D per gear, 4x 2D, 1x 2D per gear for custom tuning needs
    • On-board diagnostic LEDs for ECU power, engine run, wideband status, TPS/crank/cam signal
    • Includes 3.5 in. touchscreen handheld with calibration wizard for building a base tune quickly
    • Compact ECU mounts virtually anywhere (LEDs must face up)
    • Plug-and-play compatible with Holley EFI gauges, shift lights, and dash accessories (P/N 553-106, 553-111, 553-112)
    • Free EFI tuning software for full laptop control

    Specifications:

    • Injector Connector: Jetronic/Minitimer (Ford-spaced EV1)
    • MAP Sensor: 1-bar, integrated
    • Transmission Control: None
    • Handheld Included: Yes, 3.5 in. touchscreen
    • Includes: Universal MPFI Main Harness, Ford-Spaced EV1 Injector Harness, Terminator X ECU, ECU Main Power Harness, Bosch LSU 4.9 Wideband O2 Sensor
    • Part Number: 550-937

    Terminator X ECUs are designed to be mounted with the LEDs facing up. If using the factory Ford TPS and IAC sensor, a Ford connector (not supplied) must be wired in.

    FAQ

    What engines is the 550-937 Terminator X kit designed for?

    It's built for conventional Ford V8 engines such as the 302W, 351W, or 460 Big Block.

    Does this kit include transmission control?

    No, this kit provides engine control only; for transmission control on a 92-97 4R70W, see part number 550-943.

    Can I run a HyperSpark distributor with this system?

    Yes, with the 558-323 adapter; Dual Sync distributors are plug-and-play without an adapter.

    Does this kit include a handheld for tuning?

    Yes, it includes a 3.5 in. touchscreen handheld with a calibration wizard.

    Do I need any extra parts to use the factory Ford TPS and IAC sensor?

    Yes, a Ford connector (not supplied) must be wired in to use the factory Ford TPS and IAC sensor.

    Shipping Policy
    • Free shipping on orders over $99 (excludes freight shipments).
    • In-stock orders typically ship within 1 to 2 business days. Weekend and holiday orders are processed the next business day.
    • Orders ship from Defiance, Ohio and a nationwide network of warehouses and manufacturers.
    • Items showing an ETA are not in stock yet. ETAs come from the manufacturer and can change.
    • No P.O. Boxes. International orders need a shipping quote, so email us first.

    Read the full Shipping Policy

    Return Policy
    • 30-day return window from the ship date. Returns must be approved first; email sales@berryperformancesales.com with your order number.
    • Items must be unused, complete and in the original packaging.
    • A 20% restocking fee applies, and return shipping is paid by the buyer.
    • Not returnable: installed or modified parts, opened or used programmers and tuners, custom orders, Open Box, and Clearance or Final Sale items.
    • Damaged, defective or incorrect items must be reported within 48 hours of delivery with photos.

    Read the full Return Policy

    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.

    Recently Viewed