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Thread: wont shift at WOT after 4.10's installed

  1. 09-14-2006 #1
    Rockets
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    wont shift at WOT after 4.10's installed

    I'm working on a 05 C6 LS2 Automatic. It was recently swapped from 3.15 to 4.10 gears and we have been attempting to get it to shift at WOT all day now. I have adjusted WOT shift speeds, WOT RPM shift to 6000, part throttle shift speeds, everything I can think of. Nothing changes a thing.

    The only thing left I am thinking is the line pressure is too high now. Anyone have any ideas? This just hits 6700 and bounces the rev limiter.

    TIA,

    Bob
    Last edited by Rockets; 09-15-2006 at 12:02 PM.
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  2. 09-14-2006 #2
    Russ K
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    There is a thread started by Dyno Tech in Aug. about a problem after changing gears in a 2005 A4 Corvette. You should send your file to support.

    Russ Kemp
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  3. 09-14-2006 #3
    Bill@HPTuners
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    that thread had nothing to do with shifting...the heads up display & the analog speedo just didnt match, which I think they figured it out. A6 tuning just plain sucks lol you should take a look at an a6 tune.
    It doesn't have to be perfect, it just needs to be done in two weeks...

    A wise man once said "google it"
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  4. 09-15-2006 #4
    EC_Tune
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    Bob,

    Post up your file (stock & modded).

    And, did you change gear ratio in the Speedo section?

    EC
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  5. 09-15-2006 #5
    Rockets
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    Talking

    Here is the OEM file (as oem as I could get, as the PCM had already been flashed by procharger before it came to me)
    www.pm-fl.com/images/BobbyOEM.hpt

    and the latest file, I plan to upload it today. The only thing in this I have not tried in the car is the part throttle table which i just changed overnight. I dont see it fixing the problem though.

    www.pm-fl.com/images/bobbydyno20ROAD3.hpt

    I'm gonna try dropping Line pressure if this file doesnt get it...

    Thanks guys,
    Bob


    Quote Originally Posted by EC_Tune
    Bob,

    Post up your file (stock & modded).

    And, did you change gear ratio in the Speedo section?

    EC
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  6. 09-15-2006 #6
    Bill@HPTuners
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    BTW the file you posted is from an 05 A4, completely different from an 06 Automatic.
    It doesn't have to be perfect, it just needs to be done in two weeks...

    A wise man once said "google it"
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  7. 09-15-2006 #7
    Rockets
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    Quote Originally Posted by foff667
    BTW the file you posted is from an 05 A4, completely different from an 06 Automatic.
    Yeah, it's actually an 05 C6 vette. I typo'd.

    Bob
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  8. 09-15-2006 #8
    Rockets
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    Problem solved: It was a combination of the MPH table needing to be 0's for upshifts, and the line pressure at the 1 -> 2 shift. I had to drop it from 80 to 55 psi to get it to shift. But it shifts great now.
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