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Holley 550-917 Terminator X Max MPFI Controller Kit w/4L60, 80 Transmission Control for Gen III GM Truck Engines [24X Crank, 1X Cam]

510-550-917

made in usa

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550-917 Terminator X Max MPFI Controller Kit w/4L60, 80 Transmission Control for Gen III GM Truck Engines [24X Crank, 1X Cam]
$1,828.95
More than 10 available
Terminator X Max MPFI Controller Kit
  • GM LS 4.8L, 5.3L, 6.0L Truck Engines
  • 4L60E/4L80E Transmission Control
  • 24x Crank Reluctor
  • 1x Cam
  • Multec 2 Injector Harness
  • 3.500 in. Handheld Touchscreen
  • Free Shipping - Ships
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    Price
    Brand
    550-917 - Holley EFI Terminator X & Terminator X Max MPFI Controllers is rated 5.0 out of 5 by 5.
    Rated 5 out of 5 by from Holley efi max I bought this few weeks ago it was simple anyone can do it if you have basics skills with electrical. I would recommend this to anyone
    Date published: 2021-04-29
    Rated 5 out of 5 by from Great product Install instructions are great. Harness appears to be good quality. Handheld could be better resolution but for the price its well worth it. Installed and engine fired right up and idled.
    Date published: 2020-03-30
    Rated 5 out of 5 by from Worth every penny! Holley has knocked it out of the park with this affordable PCM/harness. Everything plugged in and after the brief setup, it fired right up and started learning. The tuning software is pretty easy to learn and it's a free download. You will have to add an inlet air temperature sensor. Some of the wires are an odd length, but I assume that's because they are generic and not vehicle specific. I would still highly recommend this to anyone that doesn't want to pay a tuner or learn HP tuners.
    Date published: 2019-12-26
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    Does this system connect directly to LS injector harnesses, knock sensor harness as well as factory sensor plugs? 

    Asked by: TotallyVW
    The Holley 510-550-917 Terminator connects to all factory style sensor plugs.
    Answered by: jshook
    Date published: 2024-01-29

    Does this tie into the GM Passlock system in an way at all? Does it have an immobilizer feature or is this?

    Asked by: Jimmy
    The Holley 510-550-917 ecu does not work in conjunction with GM Passlock.
    Answered by: jshook
    Date published: 2023-07-25

    Will this work with a throttle cable or is it drive by wire?

    Asked by: Bobby 27
    The Holley Terminator 510-550-917 is drive by wire.
    Answered by: jshook
    Date published: 2023-10-10
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