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Thread: cos3 to cos5

  1. #1
    New Member
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    Oct 2008
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    Default cos3 to cos5

    can I program 02020005 into my ECM and then do a calibration only reflash from COS3 to get started? Or, I have a good working COS5 tune from another car. Can I do a full reflash using this file after I have modified it with my fuel map and commanded AFR?

    Last, is there a tutorial just for COx to COS5?

    thanks.

  2. #2
    Joe (Moderator) joecar's Avatar
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    Default

    wingnut, welcome to the forum...

    You should be able to.

    Or you could open 02020005 as the calibration and 02020003 as the alternate, and then do (in this order):
    - copy all the non-engine segments,
    - click on the Show Differences, highlight all the differences, click Update,
    - check for out-of-range values (check also in the custom segment) and fix them,
    - save file,
    - do full flash,
    - read flash to new file and compare.

  3. #3
    New Member
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    wow. thanks!

    I mainly need this system for the Juice, but i am going to use the alpha N for just my idle segments. 50 60 on map and 800 to 1200 RPM. Everything else is dead on.

    thanks again.

  4. #4
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    It worked Joe! Thanks.

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