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    Holley EFI Holley EFI Terminator X - Ford Mod Motor 2V/4V Kit 550-1221

    Vendor: Holley EFI
    Part Number: 550-1221
    Save $257
    Sale Price $2,049.95 Regular Price $2,306.95

    Currently out of stock.

    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.
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    Whether you're building a budget beater or full on race car, Terminator X has the industry leading features and technology you need at a price that won't break the bank.


    Holley EFI Holley EFI Terminator X - Ford Mod Motor 2V/4V Kit 550-1221


    Specifications:

    10429 Yes
    10431 Yes
    Brand Holley EFI
    10423 Yes
    Category Air and Fuel Delivery
    10438 Yes
    10430 Yes
    10437 No
    Drive-By-Wire No
    10442 Yes
    10418 Yes
    10428 Yes
    Emission Code 3
    Engine Ford Mod Motor
    10433 Yes
    7246 No
    10417 No
    906 No
    10425 No
    8922 No
    3390 Performance
    Handheld Included No
    909 No
    Ignition Coil Type Smart
    10422 Yes
    10432 Yes
    Injector Connector USCAR (EV6)
    9780 No
    10427 Yes
    MAP Sensor 1bar
    30 No
    10420 Yes
    part type Fuel Injection System
    Product Type EFI System
    10421 Yes
    10434 Yes
    Sub Category Fuel Injection System and Related Components
    918 No
    Transmission None
    10435 Yes
    Warning California Proposition 65
    10419 Yes
    10429 Yes
    10431 Yes
    Brand Holley EFI
    10423 Yes
    Category Air and Fuel Delivery
    10438 Yes
    10430 Yes
    10437 No
    Drive-By-Wire No
    10442 Yes
    10418 Yes
    10428 Yes
    Emission Code 3
    Engine Ford Mod Motor
    10433 Yes
    7246 No
    10417 No
    906 No
    10425 No
    8922 No
    3390 Performance
    Handheld Included No
    909 No
    Ignition Coil Type Smart
    10422 Yes
    10432 Yes
    Injector Connector USCAR (EV6)
    9780 No
    10427 Yes
    MAP Sensor 1bar
    30 No
    10420 Yes
    part type Fuel Injection System
    Product Type EFI System
    10421 Yes
    10434 Yes
    Sub Category Fuel Injection System and Related Components
    918 No
    Transmission None
    10435 Yes
    Warning California Proposition 65
    10419 Yes
    Description_INV TERM X MPFI,FORD MOD 2&4V,SMARTCOILS,EV6
    Description_ASC Terminator X ECU's are designed to be mounted with the LED's facing up. Does not include a 3.5" Touch Screen LCD, USB dongle provided for Initial Laptop Setup
    Description_DES Holley EFI Terminator X - Ford Mod Motor 2V/4V Kit
    Description_EXT Compatible w/ Smart coils and EV6 injectors
    Description_MKT Introducing Terminator X and X Max Kits for the Modular Ford engine. These new kits will plug and play with either 2V or 4V Mod Motors commonly found in 1996-2004 Mustangs, 1995-2006 F150, or 2002-2005 Explorers. These kits will work with both 4.6 and 5.4L power plants, so no matter what your donor vehicle was, we have a standalone Terminator X EFI system for your combination.
    Description_MKT Terminator X features real-time fuel learn, high impedance injector drivers, integrated 1bar MAP sensor, and 4 programmable inputs and outputs. These are ideal for electric fans, boost control solenoids, progressive nitrous control, and much more.
    Description_MKT Terminator X PC Software is loaded with base calibrations to support the Ford 2V & 4V Modular engines along with many others.
    Description_MKT Included with Terminator X is Holley EFI's industry leading support, easy to use software suite that allows full laptop access/compatibility for advance users.
    Description_MKT Whether you're building a budget beater or full on race car, Terminator X has the industry leading features and technology you need at a price that won't break the bank.
    Description_FAB Plug and play engine control (for Ford Modular Engines, 4.6L 2V and 4V, or 5.4L 2V or 4V)
    Description_FAB Plug and play compatible with multiple Holley EFI accessories including our gauges, shift lights, various modules, and digital and pro dashes (Holley P/N's 553-106, 553-111, and 553-112)
    Description_FAB EV6 injector harness included
    Description_FAB High Impedance Injector drivers power Holley EFI and most stock injectors -Injector support chart found in instructions (will not support low impedance injectors)
    Description_FAB Included Bosch LSU 4.9 wideband O2 sensors for accurate readings and precise tuning control
    Description_FAB Built in 1bar MAP (manifold absolute pressure) sensor included - For Boosted applications – internal MAP sensor can be disabled and utilize external MAP sensor harness (kit includes a terminated connector for seamless installation)
    Description_FAB Vacuum hose adapters included - (1/8”, ¼”, and 3/16” sizes)
    Description_FAB 4 inputs – 12v, Ground, 5v, and frequency for items like pressure sensors, activation triggers, nitrous activation, or trans brake
    Description_FAB Boost Control – boost vs. time, boost vs. gear, boost vs. RPM, boost vs. speed, and boost safeties
    Description_FAB Nitrous Control – channels for wet or dry, progressive or non-progressive, rich/lean safeties, and target closed loop AFR (Air/Fuel Ratio)
    Description_FAB Advanced Tables – ( 4x 1D tables, 1x 1D gear table, 4x 2D table, and 1x 2D gear tables) for nearly unlimited table configuration options
    Description_FAB On-board diagnostic LEDS - ECU power, engine run, TPS calibration, cam signal, and more! Identify critical engine parameters at a glance
    Description_FAB Compact ECU (Engine Control Unit) – At only 7.45” x 4.1” x 1.66” the compact packaging allows mounting virtually anywhere (XMAX ECU = 9.6” x 4.1” x 1.66”). REMINDER: diagnostic LED’s must face up!
    Description_FAB FREE EFI Tuning software – For compete control of your Terminator X power plant
    Description_FAB USB dongle provided for Initial Laptop Setup
    Description_FAB Designed for Coil On Plug Applications - the included ignition components do not plug and play with coil banks found on 96-98 applications.
    Description_INV TERM X MPFI,FORD MOD 2&4V,SMARTCOILS,EV6
    Description_ASC Terminator X ECU's are designed to be mounted with the LED's facing up. Does not include a 3.5" Touch Screen LCD, USB dongle provided for Initial Laptop Setup
    Description_DES Holley EFI Terminator X - Ford Mod Motor 2V/4V Kit
    Description_EXT Compatible w/ Smart coils and EV6 injectors
    Description_MKT Introducing Terminator X and X Max Kits for the Modular Ford engine. These new kits will plug and play with either 2V or 4V Mod Motors commonly found in 1996-2004 Mustangs, 1995-2006 F150, or 2002-2005 Explorers. These kits will work with both 4.6 and 5.4L power plants, so no matter what your donor vehicle was, we have a standalone Terminator X EFI system for your combination.
    Description_MKT Terminator X features real-time fuel learn, high impedance injector drivers, integrated 1bar MAP sensor, and 4 programmable inputs and outputs. These are ideal for electric fans, boost control solenoids, progressive nitrous control, and much more.
    Description_MKT Terminator X PC Software is loaded with base calibrations to support the Ford 2V & 4V Modular engines along with many others.
    Description_MKT Included with Terminator X is Holley EFI's industry leading support, easy to use software suite that allows full laptop access/compatibility for advance users.
    Description_MKT Whether you're building a budget beater or full on race car, Terminator X has the industry leading features and technology you need at a price that won't break the bank.
    Description_FAB Plug and play engine control (for Ford Modular Engines, 4.6L 2V and 4V, or 5.4L 2V or 4V)
    Description_FAB Plug and play compatible with multiple Holley EFI accessories including our gauges, shift lights, various modules, and digital and pro dashes (Holley P/N's 553-106, 553-111, and 553-112)
    Description_FAB EV6 injector harness included
    Description_FAB High Impedance Injector drivers power Holley EFI and most stock injectors -Injector support chart found in instructions (will not support low impedance injectors)
    Description_FAB Included Bosch LSU 4.9 wideband O2 sensors for accurate readings and precise tuning control
    Description_FAB Built in 1bar MAP (manifold absolute pressure) sensor included - For Boosted applications – internal MAP sensor can be disabled and utilize external MAP sensor harness (kit includes a terminated connector for seamless installation)
    Description_FAB Vacuum hose adapters included - (1/8”, ¼”, and 3/16” sizes)
    Description_FAB 4 inputs – 12v, Ground, 5v, and frequency for items like pressure sensors, activation triggers, nitrous activation, or trans brake
    Description_FAB Boost Control – boost vs. time, boost vs. gear, boost vs. RPM, boost vs. speed, and boost safeties
    Description_FAB Nitrous Control – channels for wet or dry, progressive or non-progressive, rich/lean safeties, and target closed loop AFR (Air/Fuel Ratio)
    Description_FAB Advanced Tables – ( 4x 1D tables, 1x 1D gear table, 4x 2D table, and 1x 2D gear tables) for nearly unlimited table configuration options
    Description_FAB On-board diagnostic LEDS - ECU power, engine run, TPS calibration, cam signal, and more! Identify critical engine parameters at a glance
    Description_FAB Compact ECU (Engine Control Unit) – At only 7.45” x 4.1” x 1.66” the compact packaging allows mounting virtually anywhere (XMAX ECU = 9.6” x 4.1” x 1.66”). REMINDER: diagnostic LED’s must face up!
    Description_FAB FREE EFI Tuning software – For compete control of your Terminator X power plant
    Description_FAB USB dongle provided for Initial Laptop Setup
    Description_FAB Designed for Coil On Plug Applications - the included ignition components do not plug and play with coil banks found on 96-98 applications.


    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.

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