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Thread: 14/19 or 15/20?

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    14/19 or 15/20?

    Can someone lead me in the right direction on this? I have a 2011 RXPX RS currently with the Riva Thruhull exhaust, Fizzle 4" intake, removed flame arrestet and OPAS block offs. Which impeller would i see the most gains with? Also, which mods should I pick up next? thanks in advance!


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    TheElite0ne's Avatar
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    what is your target RPM range? What RPM are you seeing now on your current prop? is the current prop stock?

    Where in the Bahamas are you?

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    I am currently only at 7800 and see 71mph on a calm day. the ski only has 9 hours on it so far. i was told after 10 hours the ecu will free up some more rpms. i am just planning ahead for the prop, have a bit of extra cash now. im currently on stock prop. dont have a target rpm in mind as im still a noob to this, but im learning haha! i live on the western part of Nassau.

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    TheElite0ne's Avatar
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    Quote Originally Posted by 4R!NGS View Post
    I am currently only at 7800 and see 71mph on a calm day. the ski only has 9 hours on it so far. i was told after 10 hours the ecu will free up some more rpms. i am just planning ahead for the prop, have a bit of extra cash now. im currently on stock prop. dont have a target rpm in mind as im still a noob to this, but im learning haha! i live on the western part of Nassau.
    I believe on the Stock ECU the RPM limiter is set at 8200rpm. If you plan on adding more power mods you have to pitch your prop accordingly to stay off the limiter.... or get a tune and raise the limiter.

    The extreme summer heat kills RPM. If you start modding you will find almost a 500rpm difference between summer and winter riding. Most people in this scenario have a summer and winter prop.

  5. #5
    JFizzleJR's Avatar
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    Quote Originally Posted by 4R!NGS View Post
    Can someone lead me in the right direction on this? I have a 2011 RXPX RS currently with the Riva Thruhull exhaust, Fizzle 4" intake, removed flame arrestet and OPAS block offs. Which impeller would i see the most gains with? Also, which mods should I pick up next? thanks in advance!
    Make sure you change the intake grate!

  6. #6
    Mod less, ride more! troyheb's Avatar
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    Put a 15/20 in it and change the grate to a R&D.

  7. #7

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    The only reason i havent gotten the R&D intake grate is because ive heard the RS models come with the Riva intake grate? Can anyone confirm this?

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