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550-935 Terminator X Max MPFI Controller Kit
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HOLLEYPART NUMBER: 510-550-935

550-935 Terminator X Max MPFI Controller Kit

$1,86895$2199.95You Save$331.00
ShippingShips on 09/08/2026
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GM LS
LS2/LS3/LS Truck Engine 58x Tooth Crank Reluctor
Terminator X Max MPFI Controller Kit
  • GM LS2 6.0L, LS3 6.2L, Late Truck Engine 4.8L, 5.3L, 6.0L
  • 4L60/4L80E Transmission Control
  • Drive-By-Wire Throttle Bodies
  • 58x Crank Reluctor
  • 4x Cam
  • EV1 Injector Harness
  • Tune Using Included 3.500 in

    Take Control of LS Swaps with Terminator X MAX!

    Features

    • Simple Plug-and-Play engine controller for GM LS engines using Drive-By-Wire throttle bodies and will also control 4L60E and 4L80E automatic transmissions.
    • 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.)

    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

  • Part TypeEngine Control Module
    BrandHOLLEY
    Package Height8.0
    Package Width11.0
    Package Length12.25
    Weight10.0 PG
    Part CategoryPerformance Parts
    QuantitySold as a kit
    Part FitmentSemi Universal
    Package Qty1
    Package TypeEA
    No Questions
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    Some parts are not legal for use in California or other states with similar laws / regulations
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