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  1. H

    Need a Stock Tune for OS 15196784

    No, I thought you needed the same OS the ECM has. If I could or can, how would one upgrade the OS on the ECM? Is it just by whatever tune file you have or what?
  2. H

    Need a Stock Tune for OS 15196784

    Thanks Thanks for your help. I will let you know how it turns out.
  3. H

    Need a Stock Tune for OS 15196784

    Does anyone have a stock tune or hot tune for a 2005 LLY with OPERATING SYSTEM VERSION = 15196784 and TRANSMISSION VERSION = 15196778? My truck is a manual trans. Also, I am looking to disable EGR as well.
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