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Thread: 2015 silverado 5.3 throttle closing

  1. #1
    Tuner in Training
    Join Date
    May 2016
    Location
    valley
    Posts
    10

    2015 silverado 5.3 throttle closing

    hello new to the forum. having issues with throttle closing going from a 50 roll in drive flooring it the throttle closes then reopens tried moving power downshifts engine airflow diagnosis also having a delay hopefully i can get some good help. sent to the tuning school support but no reply from them here is a log & current tune
    THX and God Bless
    alex cantu NPT trans updates reduction updates.hpt16-10-27 00-46-30.hpl

  2. #2
    Advanced Tuner
    Join Date
    Oct 2005
    Location
    baton rouge la
    Posts
    411
    Im having the same issue

  3. #3
    Advanced Tuner Boost's Avatar
    Join Date
    Dec 2006
    Location
    Florida, USA
    Posts
    303
    Have you looked into MAF g/s permitted table?
    '12 Caprice PPV 6.0 L77 - daily transportation
    8.7 @ 84 (1/8 mile) bolt-ons

    '02 Silverado RCSB 5.3 L59 - regularly street driven
    8.2 @ 86 (1/8 mile) stock cam and spray
    8.6 @ 84 (1/8 mile) cam and heads no spray

    Our YOUTUBE CHANNEL featuring the Silverado

  4. #4
    Tuner in Training
    Join Date
    May 2016
    Posts
    15
    Peak Torque too high..

    PeakTorque.JPG
    Too high

    PeakTorque2.jpg

    should increase stock table by 10% first if still an issue 5% more