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Thread: 11' CTSV 3-4 shift flare at part throttle

  1. #1
    Tuner in Training
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    May 2010
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    11' CTSV 3-4 shift flare at part throttle

    I've been struggling to nail down this 3-4 shift flare at part throttle. Only happens in normal shift mode. In sport mode it shifts correctly no flare. Can someone take a look for me. I'll post the scan. I know I do not have probably the correct PIDs for the trans up but you can see the flare. happens between frame 1205-1251. I then stopped put it in sport mode and it shifted through fine

    Thanks

    Jeffcts trans flare.hpl11 black ctsv mitchell final 12-9-13 trans tune shift a normal.hpt

  2. #2
    Senior Tuner
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    Apr 2005
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    Try "No throttle" on your Limit TqMgt upshift.

  3. #3
    Senior Tuner Russ K's Avatar
    Join Date
    Dec 2005
    Location
    Regina, Sask.
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    The way I firm up these trans is to add 60 psi shift pressure to the entire X & Y base shift pressure tables. Then halve the entire shift time torque adder upshift normal & special tables. Leave the downshift tables stock. Also return the desired output torque factor tables to stock.

    Also I would only add 60 psi the the max line pressure table.

    Now to fine tune the shifts, reduce the shift times by 10% at a time to increase firmness, or increase 10% shift time to soften the shifts.

    Russ Kemp

  4. #4
    Tuner in Training
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    May 2010
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    Thanks guys

    I've been pulling my hair out. I'll take a look at those tables and try some adjustments..

    Jeff

  5. #5
    Tuner in Training
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    May 2010
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    one quick question. With the complete stock trans tune in, the car still flares 3-4 in stock shift, and when in sport shift mode its ok. Now with the trans tune in its better but still flares.

    Jeff

  6. #6
    Tuner
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    Mar 2006
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    DFW, Tx
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    My ZL1 does the exact same thing.
    2013 ZL1 A6

  7. #7
    Tuner
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    Feb 2008
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    Pittsburgh PA
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    Why do these 6l90's suck so bad?
    2010 Camaro SS LS3 - Heads, Cam, Whipple 11psi 756whp 663wtq 93 and meth

  8. #8
    Senior Tuner
    Join Date
    Apr 2007
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    1,104
    Fran, they don't. people just can't tune them worth a shit.
    The most hated, make the most power.
    93 Ranger. 5.3 D1X. 1069hp.