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    Sale!

    Holley EFI Holley EFI Terminator X Max - Ford MPFI Kit 550-944

    Vendor: Holley EFI
    Part Number: 550-944
    Save $250
    Sale Price $1,999.95 Regular Price $2,249.95

    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.
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    Take control of your conventional Ford engine with Terminator X! Don't settle for a factory ECU with a cumbersome tuning interface or pre-programmed tuning chip when you can have complete control of your engine, self-learning fuel strategies and the proven, race-winning technology of Holley EFI at a budget-friendly price! Terminator X features real-time fuel learn, high impedance injector drivers, an integrated 1bar MAP sensor, and 4 programmable inputs and outputs. The inputs and outputs are ideal for electric fans, boost control solenoids, progressive nitrous control, and much more. Terminator X comes fully loaded with base maps for common V8 engine combinations to get you out of the garage and on the road/track fast. The 3.5" touch screen LCD handheld contains an easy to use calibration wizard as well as tuning and gauge display functions. Also included is Holley EFI's industry-leading, easy to use software suite that allows full laptop access for advanced users. Whether you are building a budget beater or a boosted race car, Terminator X has the features and technology you need at a price that won't break the bank!


    Holley EFI Holley EFI Terminator X Max - Ford MPFI Kit 550-944


    Specifications:

    10429 Yes
    10431 Yes
    Brand Holley EFI
    10423 Yes
    Category Air and Fuel Delivery
    10438 Yes
    10430 Yes
    10437 No
    10442 Yes
    10418 Yes
    10428 Yes
    Emission Code 3
    10433 Yes
    7246 No
    10417 No
    906 No
    10425 No
    8922 No
    3390 Performance
    Handheld Included Yes
    909 No
    10422 Yes
    10432 Yes
    Injector Connector Jetronic/Minitimer (Bosch EV1)
    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 4R70W
    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
    10442 Yes
    10418 Yes
    10428 Yes
    Emission Code 3
    10433 Yes
    7246 No
    10417 No
    906 No
    10425 No
    8922 No
    3390 Performance
    Handheld Included Yes
    909 No
    10422 Yes
    10432 Yes
    Injector Connector Jetronic/Minitimer (Bosch EV1)
    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 4R70W
    10435 Yes
    Warning California Proposition 65
    10419 Yes
    Description_INV TERMINATOR X MAX MPFI FORD W/98+ TRANS
    Description_ASC Terminator X ECU's are designed to be mounted with the LED's facing up. ECU is not recommended for marine applications, but can be used on off-road applications as long as you choose a safe location, keep it dry, protect from heat, and ensure proper wiring management.
    Description_DES Holley EFI Terminator X Max - Ford MPFI Kit
    Description_EXT Universal MPFI Main Harness - 98+ 4R70W Transmission Control - 3.5 in. Touchscreen
    Description_MKT Take control of your conventional Ford engine with Terminator X! Don't settle for a factory ECU with a cumbersome tuning interface or pre-programmed tuning chip when you can have complete control of your engine, self-learning fuel strategies and the proven, race-winning technology of Holley EFI at a budget-friendly price! Terminator X features real-time fuel learn, high impedance injector drivers, an integrated 1bar MAP sensor, and 4 programmable inputs and outputs. The inputs and outputs are ideal for electric fans, boost control solenoids, progressive nitrous control, and much more. Terminator X comes fully loaded with base maps for common V8 engine combinations to get you out of the garage and on the road/track fast. The 3.5" touch screen LCD handheld contains an easy to use calibration wizard as well as tuning and gauge display functions. Also included is Holley EFI's industry-leading, easy to use software suite that allows full laptop access for advanced users. Whether you are building a budget beater or a boosted race car, Terminator X has the features and technology you need at a price that won't break the bank!
    Description_FAB Plug and play Ford V8 engine control, such as the 302w, 351w or 460 Big Block.
    Description_FAB Includes Ford Spaced EV1 Injector Harness
    Description_FAB Ford 4R70W Transmission Control Harness (Terminator X Max Only)
    Description_FAB Universal Engine Harness, some connectors such as the TPS and IAC may need to be changed to match your application.
    Description_FAB High Impedance Injector Drivers will safely power most Stock injectors, and Holley EFI Injectors. Injector support chart provided in the instructions (Will not control Low Impedance Injectors)
    Description_FAB All of the new Terminator X systems utilize the Bosch LSU 4.9 wideband to relay AFR information to the ECU for accurate reading and precise tuning control.
    Description_FAB Built in 1bar MAP Sensor, vacuum hose adapters included (1/8th – ¼ and 3/16ths)
    Description_FAB Boosted applications, you can disable the internal MAP sensor, and utilize an external MAP Sensor, the harness comes with the connector terminated, making the install
    Description_FAB MAP Sensor vacuum hose adapters (1/8th – ¼ and 3/16ths)
    Description_FAB Plug and plug ignition capability with Dual Sync and HyperSpark Distributors, adapter 558-323 required for HyperSpark Distributors.
    Description_FAB 4 Inputs – 12v, Ground, 5v, and Frequency, for things such as additional pressure sensors, or activation triggers for nitrous activation, or a trans brake
    Description_FAB Boost Control – Boost vs Time, Boost vs Gear, Boost vs RPM, Boost vs Speed, Boost Safeties
    Description_FAB Nitrous Control – Single Channel of Wet or Dry, Progressive or Non-Progressive, Rich/Lean Safeties, and target Closed Loop AFR
    Description_FAB Advanced Tables – 4x 1D Tables, 1x 1D per Gear Table, 4x 2D Tables, 1x 2D per Gear Table, can be used for any custom tables you can dream up, such as Flex Fuel Sensor Offset Table, or a custom fuel or oil pressure safety!
    Description_FAB On-Board Diagnostic LEDS for: ECU Power – Engine Run – Wideband Status – TPS Calibration – Crank Signal –Cam Signal. Allow you to identify any Critical engine issues at a glance
    Description_FAB The included 3.5" Touchscreen Handheld contains a calibration wizard, that allows you to quickly build a base tune for any domestic V8 engine. Additionally the handheld provides internal data-logging and a fully customizable gauge display.
    Description_FAB The compact ECU size allows you to mount it virtually anywhere. Remember, diagnostic LEDS must face up!
    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 Free EFI Tuning Software for complete control of your Terminator X power plant
    Description_INV TERMINATOR X MAX MPFI FORD W/98+ TRANS
    Description_ASC Terminator X ECU's are designed to be mounted with the LED's facing up. ECU is not recommended for marine applications, but can be used on off-road applications as long as you choose a safe location, keep it dry, protect from heat, and ensure proper wiring management.
    Description_DES Holley EFI Terminator X Max - Ford MPFI Kit
    Description_EXT Universal MPFI Main Harness - 98+ 4R70W Transmission Control - 3.5 in. Touchscreen
    Description_MKT Take control of your conventional Ford engine with Terminator X! Don't settle for a factory ECU with a cumbersome tuning interface or pre-programmed tuning chip when you can have complete control of your engine, self-learning fuel strategies and the proven, race-winning technology of Holley EFI at a budget-friendly price! Terminator X features real-time fuel learn, high impedance injector drivers, an integrated 1bar MAP sensor, and 4 programmable inputs and outputs. The inputs and outputs are ideal for electric fans, boost control solenoids, progressive nitrous control, and much more. Terminator X comes fully loaded with base maps for common V8 engine combinations to get you out of the garage and on the road/track fast. The 3.5" touch screen LCD handheld contains an easy to use calibration wizard as well as tuning and gauge display functions. Also included is Holley EFI's industry-leading, easy to use software suite that allows full laptop access for advanced users. Whether you are building a budget beater or a boosted race car, Terminator X has the features and technology you need at a price that won't break the bank!
    Description_FAB Plug and play Ford V8 engine control, such as the 302w, 351w or 460 Big Block.
    Description_FAB Includes Ford Spaced EV1 Injector Harness
    Description_FAB Ford 4R70W Transmission Control Harness (Terminator X Max Only)
    Description_FAB Universal Engine Harness, some connectors such as the TPS and IAC may need to be changed to match your application.
    Description_FAB High Impedance Injector Drivers will safely power most Stock injectors, and Holley EFI Injectors. Injector support chart provided in the instructions (Will not control Low Impedance Injectors)
    Description_FAB All of the new Terminator X systems utilize the Bosch LSU 4.9 wideband to relay AFR information to the ECU for accurate reading and precise tuning control.
    Description_FAB Built in 1bar MAP Sensor, vacuum hose adapters included (1/8th – ¼ and 3/16ths)
    Description_FAB Boosted applications, you can disable the internal MAP sensor, and utilize an external MAP Sensor, the harness comes with the connector terminated, making the install
    Description_FAB MAP Sensor vacuum hose adapters (1/8th – ¼ and 3/16ths)
    Description_FAB Plug and plug ignition capability with Dual Sync and HyperSpark Distributors, adapter 558-323 required for HyperSpark Distributors.
    Description_FAB 4 Inputs – 12v, Ground, 5v, and Frequency, for things such as additional pressure sensors, or activation triggers for nitrous activation, or a trans brake
    Description_FAB Boost Control – Boost vs Time, Boost vs Gear, Boost vs RPM, Boost vs Speed, Boost Safeties
    Description_FAB Nitrous Control – Single Channel of Wet or Dry, Progressive or Non-Progressive, Rich/Lean Safeties, and target Closed Loop AFR
    Description_FAB Advanced Tables – 4x 1D Tables, 1x 1D per Gear Table, 4x 2D Tables, 1x 2D per Gear Table, can be used for any custom tables you can dream up, such as Flex Fuel Sensor Offset Table, or a custom fuel or oil pressure safety!
    Description_FAB On-Board Diagnostic LEDS for: ECU Power – Engine Run – Wideband Status – TPS Calibration – Crank Signal –Cam Signal. Allow you to identify any Critical engine issues at a glance
    Description_FAB The included 3.5" Touchscreen Handheld contains a calibration wizard, that allows you to quickly build a base tune for any domestic V8 engine. Additionally the handheld provides internal data-logging and a fully customizable gauge display.
    Description_FAB The compact ECU size allows you to mount it virtually anywhere. Remember, diagnostic LEDS must face up!
    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 Free EFI Tuning Software for complete control of your Terminator X power plant


    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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