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Thread: A580 Issues

  1. #1
    Advanced Tuner VodeAn's Avatar
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    Jun 2012
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    A580 Issues

    Working on a 6.1 L swapped charger R/T with an A580 transmission. Engine tune seems to be okay.

    3.91 Gear
    29" Tire
    Cam
    Heads
    Intake
    Exhaust
    3800 Stall



    First issue is that under wot acceleration in 1st and (no traction) the rpms overshoot and the transmission goes into limp mode
    I have the max RPM in the trans set to 6400rpm and the limp mode trigger 1000rpms above. The engine revlimiter is at 6500 RPM

    Secondly, in the Auto-Stick mode the transmission is shifting wayy too early. Like you pre-load second and nail it at 2500 rpm and it shifts at 4k rpm.
    Could this be related to the 4200rpm limiter in the engine tune with MDS failed?

    Tune is attached, thanks


    Attachment 79533
    Attachment 79534

  2. #2
    Senior Tuner
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    May 2015
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    You got a log of that early shift? Sounds more like the torque converter locking up, which will feel just like a shift.

  3. #3
    Advanced Tuner VodeAn's Avatar
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    I do not, the hard drive I had the log on died. I do remember I was logging "Trans Current Gear" at the time and it was definitely shifting.

  4. #4
    Tuner in Training
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    Nov 2017
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    Have a similar issue. Ever figure this out?

  5. #5
    Tuner in Training iCanuck's Avatar
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    Quote Originally Posted by MPGPerformance View Post
    Have a similar issue. Ever figure this out?
    Possibly a gear ratio issue?