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Thread: Idle surge/stall after cam swap

  1. #21
    Tuner in Training
    Join Date
    Jun 2015
    Posts
    24
    ok PROBLEM SOLVED! 2xLS1 was on to something, yes I was open headers, so the O2's werent reading only exhaust but a mix of fresh air with it. Got full exhaust on and the narrowbands showed 14.7 and no more surging, tune is coming along good and wideband came in today Cant tune WOT really just yet, gotta let the Yank wear in. Oh, and no, stock injectors matty b
    Last edited by JP_z71; 04-30-2016 at 06:31 PM.
    '06 Silverado 5.3, 36lb'ers, BTR Stage 3, 10:1 CR, with long tubes kickin a 3000 stall,
    RIP: '99 T/A "STOK1SH" Rebuilt LS1, Comp Torquer V2, Yank SS3600

  2. #22
    Advanced Tuner
    Join Date
    Jan 2008
    Posts
    399
    NM, read that backwards.

  3. #23
    Moderator
    Join Date
    Mar 2014
    Location
    Raleigh, NC
    Posts
    6,343
    Good deal. Yeah open headers will wreak havoc on O2 sensor readings.
    Post a log and tune if you want help

    VCM Suite V3+ GETTING STARTED THREADS / HOW TO's

    Tuner by night
    CPX Tuning
    2005 Corvette, M6
    ECS 1500 Supercharger
    AlkyControl Meth, Monster LT1-S Twin, NT05R's
    ID1000's, 220/240, .598/.598, 118 from Cam Motion

    2007 Escalade, A6
    Stock

  4. #24
    Tuner in Training
    Join Date
    Apr 2016
    Location
    bedias texas
    Posts
    15
    setting base timming 28-30 at the idle rpm that you are at up to about 40-50 map kpa if your file is measured this way will help smooth things out.