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    Sale!New!

    Holley EFI Holley EFI Terminator X Max GM Gen V LT Direct Injection Kit - Early 550-1620

    Vendor: Holley EFI
    Part Number: 550-1620
    Save $413
    Sale Price $3,299.95 Regular Price $3,712.95

    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 GM Gen V LT1, L83, or L86 engine with Terminator X! Do not settle for a factory ECU with a cumbersome tuning interface 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, an integrated 1bar MAP sensor, and four 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 LT 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. All Gen V LT Terminator X kits will come with an external Gasoline Direct Injection Controller, which enables the end user to control and tune, factory injectors, GM Gen V LT Variable Valve Timing (VVT), and factory fuel pumps. 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, an LT swapped budget beater or a boosted racecar, Terminator X has the features and technology you need at a price that will not break the bank! To identify if your engine is an early or late application, refer to your fuel pressure sensor, located behind the intake manifold. Early sensors have a 4-pin connector, whereas late sensors have a 3-pin connector. This will help you pick which kit you require for your engine.


    Holley EFI Holley EFI Terminator X Max GM Gen V LT Direct Injection Kit - Early 550-1620


    Specifications:

    10429 Yes
    10431 Yes
    Brand Holley EFI
    10423 Yes
    Category Air and Fuel Delivery
    10438 Yes
    Color Black
    10430 Yes
    DI Fuel Rail Pressure Sensor Early
    10437 No
    Drive-By-Wire Yes - LT Throttle Body
    10442 Yes
    10418 Yes
    10428 Yes
    Emission Code 3
    Engine Gen V LT
    Finish Textured
    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 Direct Injection
    9780 No
    10427 Yes
    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_ABR SNEFI FIS
    Description_SHO Terminator X Max GM
    Description_INV TERMINATOR X MAX LT GDI EARLY DBW
    Description_ASC 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 GM Gen V LT Direct Injection Kit - Early
    Description_EXT GM LT Drive-by-Wire Throttle Body Control
    Description_MKT Take control of your GM Gen V LT1, L83, or L86 engine with Terminator X! Do not settle for a factory ECU with a cumbersome tuning interface 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, an integrated 1bar MAP sensor, and four 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 LT 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. All Gen V LT Terminator X kits will come with an external Gasoline Direct Injection Controller, which enables the end user to control and tune, factory injectors, GM Gen V LT Variable Valve Timing (VVT), and factory fuel pumps. 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, an LT swapped budget beater or a boosted racecar, Terminator X has the features and technology you need at a price that will not break the bank! To identify if your engine is an early or late application, refer to your fuel pressure sensor, located behind the intake manifold. Early sensors have a 4-pin connector, whereas late sensors have a 3-pin connector. This will help you pick which kit you require for your engine.
    Description_FAB Plug and play GM Gen V LT engine control including GDI and VVT support Ideal for swapping late model GM Gen V LT engines into vintage vehicles 3.5” handheld gets your engine running in no time with a step-by-step calibration wizard GM LS and LT Drive-by Wire Throttle Body Control (Terminator X Max Only) GM 4L60 and 4L80 Transmission Control (Terminator X Max Only) Included engine harness plugs directly into the factory LT DI injector sub harness OEM Injectors supported, with part numbers provided in the handheld wizard, or software Genuine Bosch LSU 4.9 Wideband Control (Will not work with LSU 4.2 Oxygen Sensors)• Genuine Bosch LSU 4.9 Wideband Control (Will not work with LSU 4.2 Oxygen Sensors) On-Board Diagnostic LEDS for: ECU Power – Engine Run – Wideband Status – TPS Calibration – Crank Signal – Cam Signal – VVT Status – Pump Control – and DI Injectors. Allowing you to identify any Critical engine issues at a glance Built in 1bar MAP Sensor, vacuum hose adapters included (1/8th – ¼ and 3/16ths) Boosted applications, you can disable the internal MAP sensor, and utilize an external LT MAP Sensor, the harness comes with the connector terminated, making the inst 4 Inputs – 12v, Ground, 5v, and Frequency, for things such as additional pressure sensors, or activation triggers for nitrous activation, or a trans brake (Fuel and Oil Pressure Inputs are pre-terminated) 4 Outputs – Ground, PWM - , for accessories such as; fans, boost control, nitrous control, IAC Kit, and more Boost Control – Boost vs Time, Boost vs Gear, Boost vs RPM, Boost vs Speed, Boost Safeties Nitrous Control – Single Channel of Wet or Dry, Progressive or Non-Progressive, Rich/Lean Safeties, and target Closed Loop AFR Advanced Tables – 4x 1D Tables, 1x 1D per Gear Table, 4x 2D Tables, 1x 2D per Gear Table Integrated data logging to the 3.5” Handheld SD Card 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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