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Holley 550-930

Holley Terminator X Max MPFI Controller Kit


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Free Shipping Ships directly from the manufacturer on 10/22/19
Save $10 off $199, $45 off $499, $100 off $999. Promo Code: FALLFUN exclusions apply

Holley Terminator X Max MPFI Controller Kit $1,299.95
Out of stock
Terminator X Max MPFI Controller Kit
  • GM LS Truck Engine 4.8L, 5.3L, 6.0L
  • Drive-By-Wire Throttle Bodies
  • 24x Crank Reluctor
  • 1x Cam
  • Multec 2 Injector Harness
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    Holley 550-930 Details

    GM LS Truck Engine 24x Tooth Crank Reluctor

    Take Control of LS Swaps with Terminator X MAX!


    • Simple Plug-and-Play engine controller for GM LS engines using Drive-By-Wire throttle bodies.
    • LCD 3 1/2 inch touchscreen provides easy base tuning with the calibration wizard along with gauge displays and data logging.
    • Real-Time Self-Learning fuel maps require no complicated tuning knowledge (Holley EFI software suite is included for advanced users with laptops)
    • On-board Multi-Color LED Diagnostic allows quick troubleshooting on critical issues for ECU Power, Engine Running, Wideband Status, TPS Calibration, Crank Signal, Cam Signal. 
    • Built-in 1bar MAP Sensor with 1/8, 1/4, & 3/16 in. vacuum hose adapters included. For boosted applications, the internal sensor can be disabled to run an external LS style MAP sensor (not included) with terminated harness and connector (included).
    • 4 Inputs - 12-volt, Ground, 5-volt, and Frequency can be used for activation triggers, trans brake, and to add extra pressure sensors.
    • 4 Outputs - Ground and PWM can be used for electric fans, boost control, nitrous control,  idle air control kit, and many more accessories. 
    • Boost Controls - Ability to control boost vs time, boost vs. gear, boost vs. RPM, boost vs. speed, boost vs. safeties
    • Nitrous Controls - Single Channel Wet or Dry, Progressive or Non-Progressive, rich/lean safeties, and target closed loop AFR
    • Advance Tables - 4x 1D Table, 1x 1D Gear Table, 4x 2D Table, 1x 2D per Gear Table.  Can be used for custom tables for flex fuel sensor, fuel pressure safety, or oil pressure safety.
    • Bosch LSU 4.9 Wideband for precision reading and tuning control (will not function with LSU 4.2 oxygen sensors
    • High Impedance Injector Driver powers most GM stock LS and Holley EFI injectors. (Use of low impedance injectors will damage the ECU)
    • Holley EFI Accessories are mostly compatible (analog style gauges, shift lights, and others.)


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    Ditch Your LS Swap Junkyard ECM

    Holley EFI has delivered the Terminator X and Terminator X Max standalone engine management system for allowing LS swappers to take full control of their fuel-injected engines. Terminator X systems were designed as a simple plug-and-play unit by incorporating self-learning technologies without needing any tuning interfaces, often required when using a factory PCM. Loaded with a long list of features, these controller kits allow custom controls for power adders such as nitrous and boost. 

    Items You Need

    Some parts are not legal for use in California or other states with similar laws / regulations

    Motor Vehicles

    WARNING: Motor vehicles contain fuel, oils and fluids, battery posts, terminals and related accessories which contain lead and lead compounds and other chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. These chemicals are found in vehicles, vehicle parts and accessories, both new and as replacements. When being serviced, these vehicles generate used oil, waste fluids, grease, fumes and particulates, all known to the State of California to cause cancer, birth defects, and reproductive harm.


    WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Some examples of these chemicals are: lead from lead-based paints, crystalline silica from bricks and cement and other masonry products, and arsenic and chromium from chemically treated lumber. Your risk from exposure to these chemicals varies, depending on how often you do this type of work. To reduce your exposure, work in a well-ventilated area and with approved safety equipment, such as dust masks that are specially designed to filter out microscopic particles.

    Electrical Cords

    WARNING: The wires of these products contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.