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Thread: VE table maxing out under boost

  1. #1
    Tuner in Training
    Join Date
    Mar 2015
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    saskatoon SK
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    33

    VE table maxing out under boost

    I am having a hard time getting the high end of my tune dialed in under boost. My combo is a lq4 4l80 with 76mm turbo and water/meth injection, cam, valve springs walbaro fuel pump and SD 60lb injectors.

    As you can see in my tune file, my VE table is maxed out already and
    I still have some lean spots.
    ive read that this usually means incorrect injector data. Can someone take a look and see if my data looks alright?
    Attached Files Attached Files

  2. #2
    Tuning Addict 5FDP's Avatar
    Join Date
    May 2012
    Location
    Rogers, MN
    Posts
    13,565
    You should be logging your injector data and atleast have a fuel pressure gauge to watch.

    The VE should not be like that, seems like you maybe have a fuel flow issue itself if you make it that rich and nothing helps.
    2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.

    If you don't post your tune and logs when you have questions you aren't helping yourself.

  3. #3
    Tuner in Training luke's Avatar
    Join Date
    May 2014
    Location
    PERTH WA
    Posts
    49
    What type of fuel set up are you running? Is it return or non-return?