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550-1015 Terminator X Max Stealth 4150 EFI System with Pre-2009 GM 4L60E/4L80E Transmission Control, Black Finish
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HOLLEYPART NUMBER: 510-550-1015

550-1015 Terminator X Max Stealth 4150 EFI System with Pre-2009 GM 4L60E/4L80E Transmission Control, Black Finish

$2,50695$2949.95You Save$443.00
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ShippingShips on Sep 14, 2026
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Terminator X Max Stealth 4150 EFI Systems
Terminator X Stealth 4150 EFI System
  • Terminator X ECU
  • 4150 Flange EFI Carb Replacement
  • Eight 100 lb./HR Fuel Injectors
  • 650 HP (Naturally Aspirated)
  • 1,250 HP (Forced Induction)
  • Pre-2009 GM 4L60E/4L80E Transmission Control
  • Black Finish

    Features:

    • Terminator X ECU - capable of fuel map self-learning and ignition timing control, improving idle stability, drivability, and wide-open throttle horsepower
    • Bolt-on 4150 flange EFI carburetor replacement in a black finish
    • Eight 100 lb./HR fuel injectors capable of supporting up to 650 HP naturally aspirated or 1,250 HP on forced induction applications
    • Transmission kickdown provisions for GM TH350/400, 200R4/700R4 and Ford C4/C6
    • Transmission control for Pre-2009 GM 4L60E/4L80E transmissions
    • All wiring exits below the rear fuel injector cover for a complete stealth installation
    • A timed spark port for vacuum advanced distributors is located under the front fuel bowl for easy access to the distributor
    • Machined air entry fits most stock-style air cleaners with locator provisions
    • An integrated ignition timing control for improved idle stability, fuel economy, and wide-open throttle performance
    • A high-resolution full-color touchscreen aids in initial setup, tuning, and gauge displays
    • No laptop required - a simple calibration wizard creates the base map and will self-tune
    • Bosch LSU 4.9 wideband oxygen sensor provides real-time fuel map learning
    • OEM-style throttle position sensor (TPS) and idle air control (IAC)

    Installation Notes:

    • Requires a Holley 510-12-886 external fuel pressure regulator (set to a base pressure of 58.5 PSI)
    • Use 510-534-247 high-pressure fuel log for simpler installation

    Emissions Note:

    This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

    CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART

    • Unleash Hidden Engines and Transmission Potential with Terminator X-Max Stealth

      Holley Terminator X-Max Stealth electronic throttle body injection (TBI) systems will improve idle stability, drivability, wide-open throttle response, plus added transmission control. Pre-calibrated TBI systems are available in your choice of a black, gold, or shiny finish with a full-color touchscreen and include everything you need for a simple, bolt-on installation.

      Also available in the X Stealth version without transmission control.

    Part TypeFuel Injection System
    Product LineHolley Terminator X-Max Stealth EFI Systems
    BrandHOLLEY
    Package Height9.9
    Package Width14.8
    Package Length26.5
    Weight20.95 PG
    Part CategoryPerformance Parts
    Wiring Harness IncludedYes
    Iat Sensor IncludedYes
    Fuel Pump IncludedNo
    Venturi Quantity8
    Throttle Body FinishBlack
    Throttle Body IncludedYes
    Fuel Pressure Regulator IncludedNo
    QuantitySold as a kit
    Injectors IncludedYes
    Tps Sensor IncludedYes
    Engine Make/SizeUniversal
    EgrNo
    Ecm IncludedYes
    Oxygen Sensor IncludedYes
    Injector Size (Lbs./Hr.)100
    Throttle Body Mounting Flange4150
    Distributor IncludedNo
    Injection StyleEFI
    Part FitmentSemi Universal
    Throttle Body MaterialCast Aluminum
    Iac Motor IncludedYes
    Map Sensor IncludedYes
    Package Qty1
    Package TypeEA
    No Questions
    No Reviews

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