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  1. #1

    Running too rich?

    I thought that my dirty transom was because of extended idling through no-wake zones. Well, yesterday my boat idled for 10 minutes and my transom was still dirty.

    Has anyone had their ECU re-programmed on a bone stock engine? Is there any performace gains? I will do it just to keep my boat clean but if I am running rich I would think there may be some small performance gains(and maybe better fuel economy)

    Any feedback and who do you recommend. I see Arizona Speed and Marine here a lot.
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  2. #2
    Charter Member #1171 Charter Member obnoxus's Avatar
    My Boats:
    Join Date
    Feb 2001
    New Lenox , Il
    Headers and a K and N flame arrestor and the film will be gone !!!!

  3. #3
    Platinum Member Platinum Member
    My Boats:
    fuel injection, superchargers
    Join Date
    Jan 2001
    PA and MD
    The headers and K+N will lean it ever so slightly enough to clean the transom and a MSD will make a cleaner more complete burn at idle and have the same effect. Search the board I haven't heard many good things about ASM reprogramming for this problem.

  4. #4
    I remember reading a few threads and it seemed that quite often the re-programming was incorrect. That's what scared me! I thought of the filter and exhaust but it's a lot of money with no real performance gain(at least that is what I have read). Did you guys get any performance out of it?


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