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  1. #1

    change impeller for better fuel economy?

    Could i change impeller for better fuel economy at cruisingspeed?
    I dont care If i loose some topspeed. I want to have lower rpm and better fueleconomy at 35-40 mph.
    Or is it enough If I change pumpcone only?
    Its a seadoo rxt 215 2006.
    What impeller should i go for?


  2. #2
    wotxxxsd's Avatar
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    Welcome aboard the Hulk!!!
    I don't think you will save $$$ by changing impellers.
    Impellers are not cheap and you would have to ride 1000+ hrs to off set the costs...

  3. #3

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    Quote Originally Posted by jojje123 View Post
    Could i change impeller for better fuel economy at cruisingspeed?
    I dont care If i loose some topspeed. I want to have lower rpm and better fueleconomy at 35-40 mph.
    Or is it enough If I change pumpcone only?
    Its a seadoo rxt 215 2006.
    What impeller should i go for?
    A lower engine speed doesn't necessarily mean you're using less fuel. If an impeller with a higher pitch is installed, the engine speed may be lower but it may be operating in a lower part of the engine's torque curve so you may need a larger throttle opening to maintain the same boat speed. This will result in greater fuel consumption. Your acceleration will also be slower. The best way to save fuel with a supercharged engine is to just stay out of the boost.

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    ride it like you stole it!!! raceneked's Avatar
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    Quote Originally Posted by pro1200 View Post
    Quote Originally Posted by jojje123 View Post
    Could i change impeller for better fuel economy at cruisingspeed?
    I dont care If i loose some topspeed. I want to have lower rpm and better fueleconomy at 35-40 mph.
    Or is it enough If I change pumpcone only?
    Its a seadoo rxt 215 2006.
    What impeller should i go for?
    A lower engine speed doesn't necessarily mean you're using less fuel. If an impeller with a higher pitch is installed, the engine speed may be lower but it may be operating in a lower part of the engine's torque curve so you may need a larger throttle opening to maintain the same boat speed. This will result in greater fuel consumption. Your acceleration will also be slower. The best way to save fuel with a supercharged engine is to just stay out of the boost.
    ...you say this like its an easy thing to do.

  5. #5
    wotxxxsd's Avatar
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    Less boost equals less fuel used...

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