Macboost stage to tubes
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  1. #1
    Frequent Poster aquatraxter's Avatar
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    Macboost stage to tubes

    Hey fellow aquatraxters! I just recently finished off the stage 2 process with the intercooler. The first several times out I was running 91 octane and using the 17.5 tube. Seemed to be fine. Not sure if that's giving me best performance with that combo. This past weekend, ran 94 octane with 17.5 tube and noticed at any given speed (maintaining that speed), revs would bounce up and down? Any of you experience this? It seems like I won't have the luxury of going back and forth from 91-93 or 94 octane without some issues?

  2. #2
    Frequent Poster aquatraxter's Avatar
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    Re: Macboost stage to tubes

    Sorry, typo stage 2

  3. #3
    PWCToday Newbie Manny2587's Avatar
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    Re: Macboost stage to tubes

    I run 110 octane race fuel and use the 17.5 tube. I haven't noticed the issue you are describing. Maybe throw some new plugs in her and see if it helps.

    Do you feel the problem or just see it on the tach?


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  4. #4

    Re: Macboost stage to tubes

    Try the stock tube.. Your gas may not be up for the job.
    Make sure your steady state rpm is not going over 6500 or you are on the limiter
    MACSBOOST!!! The Honda PWC Performance Experts. www.MacsBOOST.com
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  5. #5
    Frequent Poster aquatraxter's Avatar
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    Re: Macboost stage to tubes

    I'm going to try stock tube this weekend and report back. I'd assume plugs are fine, oil and plugs changed about 20 hours ago.

  6. #6

    Re: Macboost stage to tubes

    Wastegate solenoid could be intermittent. Knock sensor and or computer could be starting to go too
    MACSBOOST!!! The Honda PWC Performance Experts. www.MacsBOOST.com
    Home of the MACSBOOST Module and the Fastest Honda PWC on the planet.
    http://www.youtube.com/watch?v=yqufmQ_8bxU
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  7. #7
    Frequent Poster aquatraxter's Avatar
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    Re: Macboost stage to tubes

    Could barely feel it, just watched the tach bounce a little. I'm going to go out this weekend and see if it's still doing it. Maybe try stock tube. Still running 94.

  8. #8
    Frequent Poster aquatraxter's Avatar
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    Re: Macboost stage to tubes

    Ran again today, good 5 or 6 hours. No issues, no revs bouncing? Ran seafoam through both machines at last fill up. I'm starting to think ethanol is just wrong. Man I love these machines.

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