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Thread: lt1 stand alone in a jeep

  1. #1

    lt1 stand alone in a jeep

    i have an lt1 from a 2019 camaro and new stand alone harness and ecu from GM in a jeep with manual transsmission is good and after i took the jeep to a the tuner i have negative idle spark
    with the stock file idle spark i good.

  2. #2
    Senior Tuner Ben Charles's Avatar
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    Make sure you don’t have any Vac leaks, what’s the map KPA?

    Email Tunes, [email protected]
    96 TA Blown/Stroked, 4L80E/Fab 9
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  3. #3

    lt1 idle log

    here is a log
    Attached Files Attached Files

  4. #4
    i uploaded a log

  5. #5

    lt1 stock read

    lt1 stock read
    Attached Files Attached Files

  6. #6
    upp

  7. #7
    Advanced Tuner IARLLC's Avatar
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    Aug 2016
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    Your tuner needs to work this out. If he does not know how to, you should find someone who understands GEN5 better.

    As it is a custom install there is probably some changes in airflow that require VVE adjustment. Once MAF and VVE are very accurate, if it still idles with low ignition timing, you can reduce VT in the idle areas. VT also needs to be right on for GEN5 rigs to idle right.

    https://forum.hptuners.com/showthrea...egative+timing

    https://forum.hptuners.com/showthrea...egative+timing

    https://forum.hptuners.com/showthrea...egative+timing
    Last edited by IARLLC; 01-23-2021 at 04:21 AM.

  8. #8
    thank you, gen 5 is new to tuners in my area