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Thread: HPtuner logs on Lt4

  1. #1
    Potential Tuner
    Join Date
    Dec 2019
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    5

    HPtuner logs on Lt4

    I have acquired the Series 2 unit to begin the work to get the LT4 set up for e85 and other modifications. I will leave the tuning to professionals who are experienced with the DI and torque management - but while logging I see some interesting items related to what seems like massive amounts of misfires.

    These are not loaded misfires. They are after release of the throttle. And they are separate from knocks.

    As a baseline, I have replaced the plugs and wires but not the coils.

    Here is the link the two logs that clearly show the misfires. https://drive.google.com/open?id=1A5...-5dbXuz00I6MAx



    If someone can see something as the trigger in the logs that I cannot see, please advise. Much appreciated.

  2. #2
    Potential Tuner
    Join Date
    Dec 2019
    Posts
    5
    Another CEL went solid. This time I have a freeze frame and strangely the STFTs show 99%.