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Thread: 6r80 2nd gear launch

  1. #1
    Tuner in Training
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    Jul 2014
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    15

    6r80 2nd gear launch

    I have 2011 mustang 3.7 6r80 that runs NHRA stock eliminator its not a street car drag car only. I'm wanting to try 2nd gear start 1st gear is to low with 4.56 gears can't get car on convertor only stalls 2500rpm in 1st gear in 2nd gear stalls 4200rpm I Think it will 60ft better in 2nd. I tried setting 1-2 shift to 0 and 2-1 to 0 if i power brake it to full stall 4200rpm and let off brake it leaves in 2nd and shifts 3rd at 7000rpm if I don't power brake and just floor if it leaves in 1st and short shifts 2nd at 5000rpm what am I missing for it to always 2nd gear start. FYI car has been 12.40s 110.8mph 3460lbs bone stock 3.7 only mods are full length headers 4.56 gears 4200 stall skinnys slicks full drag suspension car is basically a cobra jet clone with a baby engine lol
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  2. #2
    Set your 1-2 and 2-3 TC Limit to your desired shift point (speed)

  3. #3
    Advanced Tuner
    Join Date
    Dec 2017
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    767
    Post log and tune it would be easier for someone to help that way

  4. #4
    Advanced Tuner
    Join Date
    Mar 2018
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    447
    Look at a 18 up F150 trans tune 4X4L. The 1>2 is zeroed out.

    Causes it to start in 2nd. It works on the 6R80 also.
    Last edited by K44; 08-08-2022 at 10:55 PM.

  5. #5
    Tuner in Training
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    Jul 2014
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    15
    Sorry K44 I didn't get back to anyone thank you for the help. I haven't been able to work on car had some trouble with a couple of jobs at work been working 7 to 7:30 by the time I get home I'm beat up I eat and go to bed. I plan on messing with car Saturday. My pcm doesn't use oss it uses speed or rpm I did set 1-2 and 2-1 shifts all to 0 It does work but only if I power brake it to the floor then let go of brake it starts in 2nd and shifts 3rd at 7000rpm if I just floor if from idle starts in 1st and short shifts 2nd at 5000rpm. I'll try and post tune when you see tune its not like anything you normally see car doesn't have knock sensors I run car on one map point OP this way spark and cam timing follow one schedule like a stand-alone system keeps the car consistent. In bracket racing it's only shoe polish on the window if the weather changes and it slows down or speeds up wipe the shoe polish off and change the time don't change the car if that makes sense lol.

  6. #6
    Advanced Tuner
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    Mar 2018
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    447
    It works on mine, I have sport set to start in 2nd gear. 17 6R80

  7. #7
    Advanced Tuner
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    Mar 2018
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    447
    I've seen tunes that use 2 mapped points but never using only one. I would like to see it.

  8. #8
    Advanced Tuner
    Join Date
    Dec 2017
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    767
    Yea would be interested in seeing