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Thread: Manifold temp cause desired boost drop?

  1. #1
    Potential Tuner
    Join Date
    Aug 2022
    Posts
    6

    Manifold temp cause desired boost drop?

    I try to tune my 2019 cadillac ATSL(e80a ecm),The desired boost can maintain at 250kpa when the manifold temp is under 55 ?C,I already disable the cot and turbo overtemp and set all boost limit to 250kpa.
    So is the manifold temp cause my desired boost drop?How can I keep my Desired boost in higher manifold temp?Any help would be appreciated,Thanks
    Attached Files Attached Files

  2. #2
    Tuner in Training
    Join Date
    Jun 2022
    Posts
    27
    Hi Bud,

    Your problem is maybe due to the high manifold temperature. 50 degrees is already very high.
    Therefore, the ignition timing is pulled back and your vehicle can no longer provide the required boost pressure.

    Spark.png

    IAT.png

    Cheers