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  • Holley EFI 550-944 Terminator X Max - Ford MPFI Kit, automotive engine management system components including wiring harnesses, control units, sensors, and connectors.

    Holley EFI

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

    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...

    $1,849.95
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  • Holley Performance Parts – EFI, Intakes, & More Holley Sniper 2 Transmission Control Kit, automotive wiring harness with connector for vehicle transmission control system.

    Holley Performance Parts – EFI, Intakes, & More

    Holley Sniper 2 Transmission Control Kit

    The Sniper Transmission Controller (STC) is designed for common GM and Ford electronic 4-speed transmissions. Three part numbers cover a complete range of applications - all Sniper EFI systems, Sniper 2 EFI specific (M8 CAN connection), or a full...

    $599.95
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  • Holley EFI Holley 550-1011 Terminator X Max Stealth with trans control, a high-performance electronic fuel injection system with a digital control box, touchscreen display module, and motorized throttle body.

    Holley EFI

    Holley 550-1011 Terminator X Max Stealth with trans conrtrl

    The Terminator X Stealth 4150 EFI system from Holley features 4, 100LB/HR Fuel Injectors capable of supporting up to 650 HP naturally aspirated or 600 HP on forced induction applications. The Terminator X ECU is capable of fuel map self-learning and...

    $2,349.95
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  • Holley 550-510-3AX Sniper 2 Upgrade Kit - Polished, automotive fuel system upgrade with polished aluminum throttle body, wiring harness, gasket, and electronic display

    Holley 550-510-3AX Sniper 2 Upgrade Kit - Polished

    Want to make the switch from the original Sniper EFI to Sniper 2 and don't want to rewire your system? The new Sniper 2 upgrade kits are designed to do exactly that! Included with each Sniper 2 Plug and Play upgrade system is an adapter solution that...

    $1,149.95
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  • Holley EFI Holley 550-917 Terminator X MAX Engine Management System, black control module with display screen and wiring harness.

    Holley EFI

    Holley 550-917 Terminator X MAX Engine Management System

    Take control of your LS engine with Terminator X Max. Don't settle for a junkyard 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...

    $1,849.95
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  • Holley EFI Holley 550-510-3XX Sniper 2 EFI-Shiny, shiny silver electronic fuel injection system with a digital display control unit.

    Holley EFI

    Holley 550-510-3XX Sniper 2 EFI-Shiny

    The #1 EFI conversion system just got better! Introducing Sniper 2 EFI - a self-tuning, easy-to-install, EFI conversion for common 4-barrel (4150 flange) style carburetors. We took everything that we learned from the original Sniper EFI system and added...

    MSRP: $1,462.95
    $1,349.95
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  • Holley EFI Holley 550-511-3XX Sniper 2 EFI - Black, an electronic fuel injection system with a digital display monitor for vehicle engine management.

    Holley EFI

    Holley 550-511-3XX Sniper 2 EFI - Black

    The #1 EFI conversion system just got better! Introducing Sniper 2 EFI - a self-tuning, easy-to-install, EFI conversion for common 4-barrel (4150 flange) style carburetors. We took everything that we learned from the original Sniper EFI system and added...

    MSRP: $1,462.95
    $1,349.95
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  • Holley Performance Parts – EFI, Intakes, & More Holley 554-157 Fox Body PCM Mounting Bracket Termintor X, black metal bracket for securing the PCM in Ford Fox Body vehicles.

    Holley Performance Parts – EFI, Intakes, & More

    Holley 554-157 Fox Body PCM Mounting Bracket Termintor X

    Holley ECU Mounting Brackets Holley ECU mounting brackets allow you to comfortably install either the Dominator ECU, Holley HP, Terminator X, or Terminator X-MAX under your Mustang's front passenger seat. They're designed to work with stock seats and...

    $110.95
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  • Holley Performance Parts – EFI, Intakes, & More Holley 558-128 Ford 87-93 Engine Harness - extra length, automotive engine wiring harness with multiple colored wires and connectors.

    Holley Performance Parts – EFI, Intakes, & More

    Holley 558-128 Ford 87-93 Engine Harness - extra length

    This harness has extra length over the standard Ford harness and is long enough to be installed under the passenger seat on cars such as Fox Mustangs.This harness is for fuel injected small block ford engines, such as 5.0L, or 5.8L Windsor powerplants...

    MSRP: $562.95
    $549.95
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  • Holley EFI 522-168 Fuel Injectors 160 Lb/Hour EV1 style, set of eight high-performance fuel injectors with black and blue components designed for automotive fuel delivery.

    Holley EFI

    Holley EFI 522-168 Fuel Injectors 160 Lb/Hour EV1 style

    Holley EFI Fuel Injectors feature a precision lapped disc valve, high-quality brass windings, and high-temp O-rings. These injectors provide excellent linearity with no discernible "bounce" at low pulse widths as commonly found in other injectors. They...

    MSRP: $1,010.95
    $999.95
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  • Holley EFI 557-200 3-port Boost Control solenoid, with blue wiring, brass fittings, and a black connector for automotive tire pressure or boost pressure management.

    Holley EFI

    Holley EFI 557-200 3-port Boost Control solenoid

    3 Port Boost Control Solenoid Valve Includes: (1) solenoid, (1) ECU pigtail harness with factory crimped ECU pin, (3) 3/16" barb fittings, (1) 1/8" NPT plug, (1) Sintered brass muffler. and (1) spare ECU pin for modified harness lengths.A typical...

    MSRP: $188.95
    $182.95
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  • Holley Performance Parts – EFI, Intakes, & More Holley EFI Main Power Harness -HP and Dominator EFI, automotive wiring harness with multiple connectors and insulated cables.

    Holley Performance Parts – EFI, Intakes, & More

    Holley EFI Main Power Harness -HP and Dominator EFI

    Main Power Harness for Avenger EFI, HP EFI, & Dominator EFI This is required if buying a separate Holley EFI Dominator or HP EFI ECU.    

    $104.95
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