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Thread: 6l80e shift time completion

  1. #1
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    Default 6l80e shift time completion

    i have a g8tt running 600rwhp and during the shifts it delays bigtime, the car will start the shift and it will lay down hard for .7 to 1 seconds then complete the shift, ive tried tq mangment off and on and no difference.

    ive attached the tune
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  2. #2
    Lifetime Member Tre-Cool's Avatar
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    try this one.

    you have some very low line pressure settings this is probably why you wait so long.

    I have also changed the cal to only use 1 shift pressure patern, same as what i did on mine. cant see the point in having multiple shift pressures.

    DO you have a stall in yours at all?
    And is the delay only between 2nd -3rd gear?

    I have found that i have delay between 2nd-3rd after cold starts the first time it goes for 3rd it will revup before changing into the next gear. At the drags i manually change into 3rd gear while waiting in line before i go out and do a run.
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    Last edited by Tre-Cool; April 24th, 2009 at 02:00 AM.

  3. #3
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    i will try this tune, the delay will happen in all gears, no stall stock converter

  4. #4
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    Angry

    tranny still has no idea what the hell to do, this trannys starting to piss me off...... everything i try it will not shift

    here are some datalogs
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  5. #5
    Lifetime Member Tre-Cool's Avatar
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    You need better logs. Hard to work out whats happening without tps.

    Makre sure your running the latest firmware etc and then upload this options file. You will need to do black box logging from the v2 controller.

    I use this for my car at the strip and driving around as you can pull data from both the ecm/tcm.

    Also attached is an example from my car at the strip the other night. bare in mind i have a 3500 circle d stall.
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    Last edited by Tre-Cool; April 30th, 2009 at 03:43 AM.

  6. #6
    Lifetime Member oztracktuning's Avatar
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    What do you think the glitch is that is apparent in log BBL00069 at 32kph and 30kph in BBL00070. In 070 it looks like wheelspin due to VSS BUT in 069 it doesnt show wheelspin?

    This is what mine did at the track under boost in 1st, it might just be that sometimes VSS doesnt spike when the car wheelspins. It misses the event and doesnt display the data??
    Oztrack
    EFILive Tuning Consultant

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    2006 NSW Super Street Drag Racing Champion

    www.oztrack.com.au


  7. #7
    Lifetime Member oztracktuning's Avatar
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    Yours Trecool is displaying very low values for Torque, so watch out that this will send it lower in the Box pressure tables as well. This might give you a chance to get even quicker shifts happening as a possibility.

    My box is shifting with boost 1-2 with issues probably mostly due to wheelspin happening when it needs to change gears, 2-3 in 0.300s (top of rpm to bottom) and 3-4 in 0.224s. It has aftermarket 4-5-6 thats all. 1-2-3 is stock and a CircleD converter that i was able to stall 3000rpm against the brake. Enough for 7psi boost.
    Oztrack
    EFILive Tuning Consultant

    Worldwide Remote Tuning Service

    2006 NSW Super Street Drag Racing Champion

    www.oztrack.com.au


  8. #8
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    here is a test of the bbl this have everything needed, its raining here today so no good log i will get one as soon as it stops raining
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  9. #9
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    look at 9:25 near the end between the 2-3 takes 1.2 seconds and i have to lift off the throttle and then it will complete the shift.
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  10. #10
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    anybody have a an idea? im at a loss

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