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Thread: need a lil help here

  1. #1
    Tuner in Training
    Join Date
    Dec 2008
    Posts
    13

    need a lil help here

    ok i have a 98 grand prix gtp
    i keep running lean no matter what i change?

    mods 3.8 supercharged
    fenderwell intake, plog, ported rear manifold, 3" downpipe no cat, 3.4 pulley, auto light 104 gapped at 55
    1.8 yella terra roller rockers

    new maf, fuel filter, pcv, plugs, wires, o2 sensor
    http://www.scandepot.net/viewscan.php?pk=5689
    Last edited by 98daytona; 12-02-2008 at 11:48 PM.

  2. #2
    Advanced Tuner
    Join Date
    Jan 2007
    Location
    New Jersey
    Posts
    557
    You mean the negative fuel trims? What have you tried changing so far? Have you done a MAF tune?
    2005 Grand Prix GTP
    My CarDomain Page

  3. #3
    Tuner in Training
    Join Date
    Dec 2008
    Posts
    13
    Quote Originally Posted by Perforator View Post
    You mean the negative fuel trims? What have you tried changing so far? Have you done a MAF tune?
    nope i am more concerned about the laen #s on the o2 sensor and red lean #s on the mid to hight range rpms
    id rater be rich with the neg # i need to get the lean problem under control
    btw i have a zzp tune on the pcm

  4. #4
    Advanced Tuner
    Join Date
    Jan 2007
    Location
    New Jersey
    Posts
    557
    Increase the MAF table in the range that you have the low O2's.
    2005 Grand Prix GTP
    My CarDomain Page