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Thread: 10r80. Raising shift points

  1. #21
    Advanced Tuner LastPlace's Avatar
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    Quote Originally Posted by Nitmer View Post
    I?m having this problem too with my 10r80.
    It will not up-shift and go into the next gear at WOT. Then limp mode for a second or two.
    How can I fix this?
    start a new thread, post your tune and a log of the issue

  2. #22
    Tuner in Training
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    Quote Originally Posted by ghostofnyc View Post
    got a few questions
    ?

  3. #23
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    2020GT A10 trying to raise shift points

    Trans will hesitate for a second or two before shifting like hitting a limit. Don't have a log to post.
    Attached Files Attached Files

  4. #24
    Advanced Tuner LastPlace's Avatar
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    Quote Originally Posted by Volstang View Post
    Trans will hesitate for a second or two before shifting like hitting a limit. Don't have a log to post.
    Part throttle leaving a stop or at wot?

    What drive mode?

    From your statement about the problem it seems like you could get a log of it very easily. (with all of the necessary "source" pids)



    Edit: I think I see your problem, try this E85 TB Rev3 RPM Anti Sft Off - fix.hpt and if it fixes it please report back.



    There are more things I see need attention, maybe you should start a thread about tune help and post your file regarding e85 set up.
    Last edited by LastPlace; 09-05-2020 at 01:29 PM.

  5. #25
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    reviving this thread: will be using this file as an example;stk.hpt

    navigate to transmission>general

    most tables will need to be modified appropriately for your targeted shift points in this tab.

    Shift points lesson.JPG

    start there and raise your RPM, Elements, OSS, and other related limits there. Raise to a reasonable number for the targeted shift points.

    Now navigate to Transmisson>shift Scheduling

    here you'll be modifying the OSS map and the desired shift points

    shift pints lesson OSS maps.JPG

    Shift points lesson WOT shift.JPG

    Make sure your OSS map matches your desired wot shift points: I usually start my wot shifting strategy around 80% ACPP

    that'll get you started: also don't forget to adjust tq management!

  6. #26
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    here is the file and log currently for some reason still not shifting as commanded.

    lucifer trans.2.hptLucifer 1.hpl

  7. #27
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    your OSS cal is wrong, you're about 200rpm high on the base and 300 high on the sport maps, You're also not logging much in the line of transmission data, I would add-in OSS', shifting schedules, TCC rpm, and so on.

  8. #28
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    for some reason my stock file is showing shifting at way above what stock is here's a glance Lucifer Stock.hpt im using 10R80 rpm and TCC Converter (reverse rpm calc) (1).xlsx

  9. #29
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    looks right on target to me for OEM, I'm not sure why that was done, I doubt its a translation error by HPT however it is the same across all mustangs so lets assume its on Ford's end. If you make your own calculator you'll see that the values you get are different from the cal your using. I used that one for a short time as well and didn't get anywhere so I made my own. There is a great patent out there I read about understanding transmission ratios and their function. If you do your research you'll see an easier way to calculate OSS based from known transmission ratios and engine RPM. From there Excell is your friend.