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Thread: 2005 silver 6.6 diesel

  1. 08-04-2007 #1
    maseratiecotec
    maseratiecotec is offline
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    Mar 2007
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    2005 silver 6.6 diesel

    Could anyone tell a novice what performace/mileage changes I would
    get by updating the ecm software form stock to the latest factory (Oct 10 06) version for a 2005 chevy diesel truck?
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  2. 08-13-2007 #2
    atver300
    atver300 is offline
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    looks like nothing but some egr changes which you should have turned off anyways
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