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Thread: Jeep Wrangler 2.0T GPEC4 tuning

  1. #1
    Tuner in Training
    Join Date
    Dec 2020

    Jeep Wrangler 2.0T GPEC4 tuning

    Hello everyone,
    I'm trying to deal with the GPEC4 ECU of my Jeep Wrangler 4XE, which is not as easy as I could expect.
    Looks like boost control is made only through compressor air filling maps, but honnestly I'm struggling to understand the way it works. To me it's a bit like an Ecoboost management, with throttle control for everything.
    Does anyone have any experience on that ECU?
    Any help would be very welcomed
    (Also, Can't figure out a way to avoid catalyst heating procedure on warm starts.. would be interested on that too )
    Thank you !
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  2. #2
    Senior Tuner SultanHassanMasTuning's Avatar
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    Nov 2009
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