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Thread: Difference between race ecm and stock?

  1. #41
    Senior Member rchuff's Avatar
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    Quote Originally Posted by Chicknstripn View Post
    True those are the only PHYSICAL differences.
    The mapping, I believe both fueling and timing, are different.
    Please someone post a side by side comparison of the maps.
    Otherwise, newbs that stumble upon this will slap stickers and engravings on their ECM believing it improves performance.
    Like Carlos said the fueling maps and timing are different on stock and race ECM's

  2. #42
    Senior Member Cooter's Avatar
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    Yes the ECMs are physically identical. It is the program inside that makes it a "race" ECM. You can blame the EPA and CARB for the need to mark the case.

    So a stock ECM with a race program in it is identical to a "race" ECM.

    Don't get confused when someone will eventually note that there are specific "race ECM" firmware versions. I am unaware of any functional difference between the firmware versions.

  3. #43
    At least B2RIB is different from BUEIB firmware. Didn't check for B3R types.

  4. #44
    Senior Member Cooter's Avatar
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    Hey Gunter, happy to see a pro one here
    Would you know why there are some exclusive race ECM firmwares?

  5. #45
    Most probably because someone paid for it.



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