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Thread: 2013 ZL1 A6 Shifting issue's - Cant Datalog "EQ Ratio vs RPM"

  1. #11
    Joe (Moderator) joecar's Avatar
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    If it's ok with you, please post ECM and TCM files.

    This is a 2013 ZL1...?

  2. #12
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    Quote Originally Posted by joecar View Post
    If it's ok with you, please post ECM and TCM files.

    This is a 2013 ZL1...?
    Yes sir!
    2013 ZL1 Automatic. Convertible.T43 - 2013 ZL1.ctzE67 - 2013 ZL1.ctz

    I don't mind sharing at all! It's what a forum is all about.

  3. #13
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    Well, any ideas?
    I'm out of them. I figured I was not datalogging the proper PID's. I'm hoping its nothing more then that...

  4. #14
    Joe (Moderator) joecar's Avatar
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    In the T43 file some of the up/downshift curves cross each other... you can't figure out which gear it is going to be in at those places.

  5. #15
    Joe (Moderator) joecar's Avatar
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    In the ECM file you have to play with the Torque Model curves, I'm not sure exactly how (I don't do many of these)... there's a thread here regarding that, let me find it.

  6. #16
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    Quote Originally Posted by joecar View Post
    In the T43 file some of the up/downshift curves cross each other... you can't figure out which gear it is going to be in at those places.
    You want to hear something funny...

    We NEVER pulled the transmission file!!!!
    No reason too!
    I, literally, pulled it just to send you.

    This car came into my shop with the pulley's and someone else's "tune" in it. So I have NO idea what was going on with it. We were able to solve the issue's with the EQ Ratio table and never thought to look at the Transmission itself to see if someone has messed with it.

    Ok, I'm going to go digging in there, now, and see what is going on.
    I'm glad I asked for help. Thank you!

  7. #17
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    Quote Originally Posted by joecar View Post
    In the ECM file you have to play with the Torque Model curves, I'm not sure exactly how (I don't do many of these)... there's a thread here regarding that, let me find it.
    Yes, please!
    I'd love to look more into that.

    Especially if this is the same for the CTS-V cars as well.

  8. #18
    Joe (Moderator) joecar's Avatar
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  9. #19
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    So, you wouldn't happen to have a stock T43 file for the ZL1, would you?

  10. #20
    Joe (Moderator) joecar's Avatar
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    Let me check...

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