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Thread: 3.8 Jeep jk prodigy turbo

  1. #1
    Potential Tuner
    Join Date
    May 2021

    3.8 Jeep jk prodigy turbo

    Is anyone still running Jeep jk 3.8 with prodigy turbo? How is your tune? Having some issues with mine. Just did it a year or so ago. Rebuilt the engine with forged dished pistons and APR studs. 6 speed with B&M shifter and centerforce clutch. Problem I am running into is a manifold pressure jump. I will be at a vacuum of -6 then uncomanded jump to 0. It makes it hard to hold highway speeds both manually and with the cruise control. I have replaced every sensor, throttle body, accelerator pedal do to a sensor intermittently showing 0 and egr valve. I was having issues at idle with the mixture being all over the place a at times stalling the engine. Anyone have any inputs or thoughts? My tech back ground is aircraft mechanic. I do both turbines and pistons with turbos. But none computer controlled except turbines.

  2. #2
    Tuner in Training
    Join Date
    Dec 2016
    Did you ever fix the issue