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Thread: Having load drop on a 2017 3.5 ecoboost with crp turbos

  1. #21
    Tuner in Training
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    Absolutely.

  2. #22
    Senior Tuner veeefour's Avatar
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    Well increase this for starters - your map peaks around 2.3-ish BAR and you are only allowing LOAD to 2.1.
    Your LOAD should equals MAP for best results.

    inc.jpg

  3. #23
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    I had that at 2.3 with no change in behavior so I set it back stock.

  4. #24
    Senior Tuner veeefour's Avatar
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    LOL set to 3 or even 4...as you can read it's labeled as MAX LOAD!

  5. #25
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    I had it at 3 as well and changed nothing.

    It follows the LSPI tables.

  6. #26
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    Post a log with this raised to 3. LOAD clearly hanged around 2.1 exactly where it was limited.

  7. #27
    Senior Tuner veeefour's Avatar
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    It's clearly not torque related but rather load related. Very simple to solve if you follow the trend...


    Clipboard01.jpg

  8. #28
    Senior Tuner veeefour's Avatar
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    Here you go your tune was still limited in like 20 places - try this has to work.

    testing_1.hpt

  9. #29
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    I understand what you're saying. but i've done what you say to do, and it does not do anything at all. It trends down and the thing you're not looking at on your graphs for some reason is TIP actual vs TIP desired

    If you note as you watch it, turbo speed desired is less, TIP actual is higher than desired and it keeps desiring less and less TIP, desired load is well above actual and desired airmass is high.
    Last edited by w00t692; 01-31-2020 at 02:57 PM.

  10. #30
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    Did you figure this out for your record run?
    This is my signature... haha

  11. #31
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    Try rising the driver demand. I would change the predicted throttle angle and the effective area tables to force the TB to stay fully open. I also would rise the LSPI reduction tables to above 2.2

  12. #32
    Quote Originally Posted by w00t692 View Post
    I understand what you're saying. but i've done what you say to do, and it does not do anything at all. It trends down and the thing you're not looking at on your graphs for some reason is TIP actual vs TIP desired

    If you note as you watch it, turbo speed desired is less, TIP actual is higher than desired and it keeps desiring less and less TIP, desired load is well above actual and desired airmass is high.
    Any update on the issue?