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Thread: HELLCAT engine swap low boost

  1. #1
    Tuner in Training
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    HELLCAT engine swap low boost

    hi im working in a grand cherokee with a hellcat engine swap, but my main issue i cant handle to build more boost than 3-4 psi so im asking for a help to raise the boost atleast to 7-8 psi via bypass valve or more if possible, any idea is welcome

    here is the tune file
    Attached Files Attached Files

  2. #2
    Tuner fumanchu182's Avatar
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    What year did the swap come from, when I did a comparison from a 2016 Challenger Hellcat Stock it matched 1:1? Do you have a log with data of a pull at wot?
    Hellcat PB > ET: 10.092, MPH: 135.650, 60': 1.492, R/T: .000
    Bone Stock Scat Pack PB > ET: 11.612, MPH: 119.52, 60': 1.634, R/T: .000 (gone but not forgotten).

    https://youtube.com/user/fumanchu182

  3. #3
    Tuner in Training
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    its a 2016 hellcat engine with 2016 hellcat ecm, dont have any datalog but i just seen just making low boost, thats the actual issue, i mannaged to change the afr via VE with wideband cause dont even enter into power enrichment

  4. #4
    Tuner fumanchu182's Avatar
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    If its 100 percent stock the ANN setup should have seen full boost without issue.
    Hellcat PB > ET: 10.092, MPH: 135.650, 60': 1.492, R/T: .000
    Bone Stock Scat Pack PB > ET: 11.612, MPH: 119.52, 60': 1.634, R/T: .000 (gone but not forgotten).

    https://youtube.com/user/fumanchu182

  5. #5
    Tuner in Training
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    check bybass via hoses map