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Thread: Pieced together a tune

  1. #1

    Pieced together a tune

    OK this is what I got on the truck right now.
    2000 GMC Sierra Extended cab

    Long Tube headers
    No cats
    No EGR
    8.1l inj
    CAI
    LS1 Fans
    Corvette servo
    100 Shot wet NOS

    First I did not use NOS on the run in the log. Im not going to use it untill I get positive feedback from yall. I pieced together a tune from the repository. Im just getting started and would like to know what I can improve on. I took the truck around the block and really like the added power, but just wanted to make sure everything looks good, im a newb so im just being cautious.
    Last edited by mcm1209; 07-07-2009 at 03:56 PM.
    2009 GMC Sierra All Terrain Z71

  2. #2
    Advanced Tuner
    Join Date
    Dec 2005
    Posts
    214
    Your injectors flow rate table in not scaled correctly for the 8.1 injectors,if they were marines it would be alittle closer but not the 8.1's
    you pe table is jacked.Get a wideband,dial in your VE and MAF and work on that timing table
    I would not spray any nitrous with that tune,you will run into problems
    Your LTrims are 20+ which is not good either
    There is alot left on the table in that file!!
    Last edited by vortec; 07-07-2009 at 05:58 PM.

  3. #3
    Do I need the PRO version to run WB?
    Ill set it back to stock other than the injectors.
    2009 GMC Sierra All Terrain Z71

  4. #4
    Advanced Tuner
    Join Date
    Dec 2005
    Posts
    214
    just work with it and log it
    You really need a wideband to get your MAF and and VE table dialed in

  5. #5
    Advanced Tuner HawkZ28's Avatar
    Join Date
    Feb 2009
    Location
    Waverly, NE
    Posts
    475
    Quote Originally Posted by mcm1209 View Post
    Do I need the PRO version to run WB?
    Ill set it back to stock other than the injectors.
    You can run a WB through AC pressure or EGR and 'cheat' that way. There's some good threads on it on here.

    Also, you could trim tune your MAF and VE- it will get you much closer until you get the WB hooked up. I recommend skipping LTFTs and just tuning via STFT's if you go that route- it's much quicker.
    Hawk