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Thread: No result w the search. What is a B9901 "block ECM caliberation"patch

  1. #1
    Junior Member
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    Sep 2011
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    Default No result w the search. What is a B9901 "block ECM caliberation"patch

    Just downloaded the updates and with my tune open I have at the very bottom a Operating System Patchs button in red. In that I have a Applied /Not Applied button for a B9901 block ECM caliberation what is this and should it be applied? Whats it for? I read the help box.....which I still dont get. Thanks

  2. #2
    Lifetime Member DoghouseDiesel's Avatar
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    It's a red folder, correct? It's just something you'll see if you have the file opened and theV2 is connected to the truck.

    If you lock the ECM, you juts won't be able to read that file until you overwrite it again.

    1207 HP / 1612 TQ

  3. #3
    Senior Member TexasCummins's Avatar
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    Jul 2011
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    Yep, keeps computers from being able to read the tune in the ECM until you flash it with that setting disabled.
    EFI Live - The Smarter way to tune!
    2006 Ram 2500 4x4

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