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Thread: Corvette c7 2014 A6 problem shift 5th to 6th gear

  1. #1
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    Corvette c7 2014 A6 problem shift 5th to 6th gear

    Hi there
    I drive a C7 A6, 6L80e differential changed to 3.42.
    Also changed the table for differential and tire manager
    The problem now is that at full load 5500 rpm and a speed of 245 km / h it does not shift into 6th gear.
    If I drive with 6 gear it switches at 5500 rpm. back on 5th gear.
    Can someone help me why?

  2. #2
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    Do you have your tune and a log available?

  3. #3
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    HP tuner file

    final.hpt This is what I got from my tuner
    Last edited by Egi; 01-22-2020 at 07:40 AM.

  4. #4
    Advanced Tuner f.creek-ranch's Avatar
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    There is no help at all....
    A lot of People try this....

  5. #5
    Advanced Tuner
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    You Normal shift Km/h in 6 upshift doesn't match the Full Throttle Shift Speed 6th


    Your normal shift speed is 300 at 100% so it's waiting until 300 KM/h to shift.
    and your Full throttle 5-6 is 272 km/h so it would shift until then either.

    Those two need to match.

  6. #6
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    It does not switch in TUDU mode at 5500-5800 Rpm, is everything influenced by the other tables?
    Can you change my tuning so that it fits my car?
    Last edited by Egi; 02-02-2020 at 11:34 AM.

  7. #7
    Advanced Tuner f.creek-ranch's Avatar
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    Im looking at the tables yesterday. I have compared the zl1 table with ss. The shift pattern B is ( ss performance) (zl1 trailer).
    after changing this to trailer on my ss the shifts seems to be in sport mode when im in D .
    The shift sheduling is now pattern a=b and b=a wich means the shift pressure pattern x and y is even changed.

    So actually D and S (M) are interchanged and I will change all the other tables (pressure, schedule, timing) , when the high speed shift works.

    I didnt test it, but the shift speed under the tables from the zl1 looks like they do a high speed shift.

    Just compare the files from repository and you know what I mean....

  8. #8
    Advanced Tuner IARLLC's Avatar
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    The Bluecat tool is excellent for setting up your shift scheduling.

  9. #9
    Advanced Tuner f.creek-ranch's Avatar
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    Has anyone play around with speedo hardware?
    Because it seems to be a problem by VSS signal to/from TCM .
    Speed output type can be : vehicle serial, vehicle repeat tos or wheel speed.