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Thread: Throttle Closing - End of all questions - COME IN

  1. 08-05-2017 #1
    ddtech
    ddtech is offline
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    Throttle Closing - End of all questions - COME IN

    I want to have a thread, centralized around helping others with throttle closing issues. I've searched for days and have YET to find all the answers.
    I'm currently tuning a FBO ATSV and i'm having issues with it closing and boost not doing what i want... I have no idea why as i've tried just about everything i know, short of tricking the EQ ration / Airmass tables which you really dont want to do.

    What are some guys finding that will hinder throttle issues and boost issues on these cars.

    Nobody has posted or found 100% fixes, i want to get to the bottom of this to help other people. so please share and post your experience.
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  2. 05-18-2018 #2
    Tapout Tuning
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    The throttle is closing because Actual Boost is exceeding Desired Boost. So you need to increase Desired Boost via a combination of changes to the Driver Demand, Knock Airmass and some other tables.
    2022 Cadillac CT5-V Blackwing (733 whp)
    2022 Cadillac CT4-V Blackwing (716 whp), 10.750 @ 134.77 mph
    2016 Cadillac ATS-Vs (eleven ATS-Vs in the 9s)
    2008 Pontiac G8 (first G8 in the 10s), 10.727 @ 129.87 mph
    2000 Bonneville SSEi (first 3800 Bonneville in the 10s), 10.711 @ 125.71 mph
    1999 Grand Prix GT (first 3800 FWD in the 8s), 8.902 @ 154.90 mph
    1998 Firebird (first 3800 RWD in the 8s), 843 whp, 8.991 @ 152.12 mph
    1998 Grand Prix GTP (first 3800 FWD in the 10s), 9.499 @ 145.13 mph
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