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Thread: Lt1 24x swap issues

  1. #1
    Advanced Tuner
    Join Date
    Sep 2017
    Posts
    736

    Lt1 24x swap issues

    I have a 97 lt1 with a torqhead 24x (0411) pcm conversion.
    My main problem currently is bank one STFT have been way off the chart. Adding 14 to 20% and sometimes up to 40 percent. This never hours away under any throttle.
    Bank two seems almost normal usually minus 10 percent or better. Goes to norm under throttle.
    I activate my LTFT but have not been able to get them read.
    U can smell gas in the intake as well as in the oil. I did happen to have smoke come from my intake when I pulled the throttle body.

    My vac seems to be low also. I have a 355 with a 234/244 cam on 110 lsa about 6 to 8 inHg at idle.
    Now I have no reason to believe I have vac leak.

    I've read quite a few posts where they've had the same issue with one bank over the other but it was an injector wiring or firing order issue. From what I know torqhead has that controlled by internal changes in the pcm.

    I swapped throttle bodies today and then went back to the original and now I get a crank sensor code p0336 for no reason.
    Car starts but runs rough wants to die at idle. Does die most the time.
    I can get it to idle at times but feels different.

    Also looking to see if anyone will look at my tune.

    I'm sure i have more..

    Thanks
    Bobby

  2. #2
    Tuner in Training
    Join Date
    Jul 2010
    Location
    Illinois
    Posts
    16
    just put together one myself, getting the tune downloaded. new here to tuning so any help would be greatly appreciated.