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Thread: 2008 Pontiac G8 tcm tuning

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  1. #1
    Fuel Injected! roughneck427's Avatar
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    mod2 is the g8 forum file the other is stock
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    Last edited by roughneck427; 01-19-2014 at 06:20 AM.

  2. #2
    Fuel Injected! roughneck427's Avatar
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    when cold the car runs hard when warmed up seems like it slows down


    with plugged air cleaner did 287 rwhp bone stock haven taken back to dyno yet with mods and tune
    Last edited by roughneck427; 01-19-2014 at 06:22 AM.

  3. #3
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    Does the "slows down" phenomena feel like the engine laying down, or the transmission shifting lazy ?

  4. #4
    Fuel Injected! roughneck427's Avatar
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    its a combination of both more throttle to go and trans shifts a lot softer I know fluid is not warmed but it is a def big difference

  5. #5
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    Roger ... lets try one thing at a time. TCM tuning initially, followed by ECM Calculated Torque Output tuning.

    I have to add some parameters to the TC software for your cals ... between that and the myriad of tables in the T43 TCM ... may be a week before I have something for you to try ... after that point, the back and forth changes should be quickly done.

  6. #6
    Fuel Injected! roughneck427's Avatar
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    no prob its my DD I gotta weld a wb bung in still and delete my mid muffler and put in x pipe before heading back to dyno I will say its def a lot faster than stock just needs some fine tuning I like an A4 a lot better right now until I understand the the T43 deal its a temperamental thing
    Last edited by roughneck427; 01-19-2014 at 06:52 AM.

  7. #7
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    OK ... try the attached T43 cal. It is by no means to be considered a finished product - you can spend days tuning these controllers.

    I primarily focused on the sequential upshifts - everyone likes to accelerate !

    Please be cautious ... if anything seems to be wrong, stop.

    It will take a few drive cycles for the adapts to learn the updated programming.

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