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Thread: 03 Custom OS ?

  1. #1
    EFILive Reseller kbracing96's Avatar
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    Default 03 Custom OS ?

    Forgive me if this has been asked and answered, but I couldn't find it anywhere. I have a turboed 01 GMC truck with a 12208322 OS and want to up grade to the custom 03 OS for obvious reasons. Do I need to load the 01 OS and appropriate .cal and .tun files first, and then load the 03 OS? Or can I just load the 03 OS and which .cal and .tun files should I use? Thanks
    01 ECSB 1/2 ton 4x4 Forged 5.7 LS1 GMC

    Custom KBracing front mounted, BW S480, intercooled turbo


  2. #2
    Lifetime Member BowlingSS's Avatar
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    Default

    Just load the 03 OS and the correct cal file. Check out the Custom OS Tune Doc in the download section. I went straight to the 03 OS. The DOC tells you everything you need to know.

    http://www.efilive.com/doc/Tutorials...20Tutorial.pdf

    Bill
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  3. #3
    EFILive Reseller kbracing96's Avatar
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    Default

    Cool, that's what I thought, but I wasn't sure, so I thought I would ask. I'm going to play with it tomorrow. Should be fun, I can't wait to get the command A/F table setup and working. Especially with gas prices going were they are . Thanks!
    01 ECSB 1/2 ton 4x4 Forged 5.7 LS1 GMC

    Custom KBracing front mounted, BW S480, intercooled turbo


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