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Thread: 8.1L Performance tunes

  1. #1
    Tuner in Training txoutlaw's Avatar
    Join Date
    Nov 2005
    Location
    TX
    Posts
    27

    8.1L Performance tunes

    I've had a tough year and just set my HPT in the closet. I bought a 04' CK3500 with the 8.1/ALLY combo at the beginning of the year. I was Just wondering if anyone had gotten a really good tune for them yet???
    "A wise man once said that it is better to remain silent and appear ignorant, rather than speak and remove doubt".

  2. #2
    Tuner
    Join Date
    Dec 2005
    Location
    Pinch, WV
    Posts
    198
    Yes I've tuned a few, they respond nicely!!!
    06 LQ4 2500HD CC LB 4wd 4.56, Dana 60,
    17 3500HD 6.0 srw
    GenIII Unlimited GM Full Size Truck/SUV
    Serial cable to WiFi

  3. #3

    looking for guidance

    I've got an 05 2500HD with the 8.1L allison combo. It's all stock. I was wondering if you would be willing to share a tune for an otherwise stock setup, so I can see what you've done? I bought HPT for my WS6 car, but I want to use it on my truck too.
    When scanning the truck, I saw some things that I didn't like. Is it normal for the MAP pressure to hit 95kpa under WOT at 3500rpms??

    And also, when sitting at an idle, my TPS reads 10%, even though I'm not touching the pedal. Is that normal??

    Thanks in advance for any help you can provide!