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  1. 01-27-2021 #1
    Oso
    Oso is offline
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    question about changing OS


    l have a 2000 5.3 with stage 2 cam cold air and electric fans. i used lsdroid to read the ecm and it shows the OS 9381344 which apparently is not an easy OS to find .xdf files for.

    a friend told me to write it with OS 12202088. i have the .xdf and .bin for 12202088 and changed a few things with tunepro. VAT off , rearend ratio, speed limiter.

    before i overwrite the ecm has anyone else done this OS overwrite and were there any issues or complications i should know about?
    Last edited by Oso; 01-27-2021 at 07:49 PM. Reason: incomplete info
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