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  1. #1
    Boilerman Bill BPnta's Avatar
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    Why is my SHO running so Rich when cruising?

    Hello all,

    Mid 13's are normal AFRs for cruising, right?

    Throughout the entire "cruising" powerband my SHO doesn't touch 13. It's mostly mid 12's. WOT is fine at 11.8.

    I've got the powershot with the B wheel and reflash. The powershot green and yellow mode are dialed all the way down, so no additional fuel is being added there.

    During all the cruising RPMs the powershot is in the green and yellow mode, so the red mode is kicking in when it's supposed to.

    Any thoughts? The LM-2 doesn't need a cal, reading 20.9 in ambient air, which is supposed to be normal.


  2. #2
    THE PLATE MAN JIM'S PERFORMANCE's Avatar
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    Quote Originally Posted by BPnta View Post
    Hello all,

    Mid 13's are normal AFRs for cruising, right?

    Throughout the entire "cruising" powerband my SHO doesn't touch 13. It's mostly mid 12's. WOT is fine at 11.8.

    I've got the powershot with the B wheel and reflash. The powershot green and yellow mode are dialed all the way down, so no additional fuel is being added there.

    During all the cruising RPMs the powershot is in the green and yellow mode, so the red mode is kicking in when it's supposed to.

    Any thoughts? The LM-2 doesn't need a cal, reading 20.9 in ambient air, which is supposed to be normal.
    Same here i see elevens when cruising.

  3. #3
    hitman's Avatar
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    The powershot cannot subtract fuel. Believe it or not that is how rich they are from the factory. This is why there is such a big increase in fuel economy with the Motec as Pete has mentioned many times.

    I am still working on my project to get complete control over fueling. Hope to have it up and running on my ski in time for Mudbug. Have everything I need, except connectors. Getting my hands on a broken powershot would help speed things up to but if that was going to happen I think it would have by now.

  4. #4
    Boilerman Bill BPnta's Avatar
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    Thanks for the replies fellas.

    Makes sense. Guess I should have picked up on it earlier

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