Results 1 to 7 of 7

Thread: Need some help,BIG cam =, stubble off idle and hard start. 2014 camaro LS3

  1. #1
    Tuner
    Join Date
    May 2015
    Location
    San Diego
    Posts
    66

    Need some help,BIG cam =, stubble off idle and hard start. 2014 camaro LS3

    Im pulling my hair out. the car runs and drives great. I don't get any surging or anything. I just cant get the car to start without giving it a little pedal, then its a little rough and starts idling. if you try to blip it off idle it stumbles and pops, even does it while your driving from a stop. i can not figure out what I need to change to fix.

    on top of that if you hold the break and hit the gas car does not burn out or even try to rev. so wierd..

    any help is greatly appreciated.


    Jessie_RPM_2014camaroLS3_bigcam_forgedinternals_12.5AFR.hpt
    wont let me attach the log file
    2011 Sierra 5.3l,
    Dart 427 with a Big cam, Big intake manifold, Big injectors and a Big ass Turbo

  2. #2
    Tuner in Training
    Join Date
    Jul 2015
    Posts
    12
    I'm have similar problems with the same car, BTR STG 3 cam but mine starts fine. I have a major stumble if I give it anything more than light throttle from a stop.
    Attached Files Attached Files

  3. #3
    Senior Tuner
    Join Date
    Apr 2007
    Posts
    1,104
    drop cranking ve to 80 and try again. your idle timing tables would fix the stumble off idle to a certain degree.
    The most hated, make the most power.
    93 Ranger. 5.3 D1X. 1069hp.

  4. #4
    Tuner
    Join Date
    May 2015
    Location
    San Diego
    Posts
    66
    Ok ill try that.. what would cause the car to not make power while holding the brake? Doesnt even rev
    2011 Sierra 5.3l,
    Dart 427 with a Big cam, Big intake manifold, Big injectors and a Big ass Turbo

  5. #5
    Senior Tuner
    Join Date
    Apr 2007
    Posts
    1,104
    torque management > brake torque limit
    The most hated, make the most power.
    93 Ranger. 5.3 D1X. 1069hp.

  6. #6
    Tuner
    Join Date
    May 2015
    Location
    San Diego
    Posts
    66
    Quote Originally Posted by Area47 View Post
    torque management > brake torque limit
    yea I thought so, didnt help.

    I have to get the stumbling off idle fixed. its fat just not sure what table that is to correct it.
    2011 Sierra 5.3l,
    Dart 427 with a Big cam, Big intake manifold, Big injectors and a Big ass Turbo

  7. #7
    Senior Tuner SultanHassanMasTuning's Avatar
    Join Date
    Nov 2009
    Location
    All Around
    Posts
    3,149
    both air models need to be tuned
    Follow @MASTUNING visit www.mastuned.com
    Remote Tuning [email protected]
    Contact/Whatsapp +966555366161