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  1. #1
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    14/19r or 15/20r

    Wonder what prop I should throw in this year. I have both. My 14/19 is in a little better shape then my 15/20 but that obviously don't mean nothing when it comes to what belongs.

    05 Rxp
    x charger
    42lb injectors
    external ic
    rrfpr
    top loader intake grate
    r&d stearing nozzle
    215 stock ecu
    water box mod

    just a little info if someone is running anything close to that, what prop are you running ?
    Thanks for the help in advance


  2. #2
    quiddo15's Avatar
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    14/19 with a stock ecu and If you reflash 15/20. If you really want to wake your ski up you should get a reflashed ecu and retainers.

  3. #3
    AtoMIC_OraNGE greenbullet's Avatar
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    You need a 15/20 like I've stated many times before to people with this setup You will be 1 mph fast with it over an 14/19 as well
    thats 14/19 sure works but it's past its potential and basically is spinning. The root angle on the 15/20 is different and is what's needed for this setup

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  5. #4

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    I had an 05 (old ski below) with pretty close to the mods you have and ran a 15/20R.

  6. #5
    quiddo15's Avatar
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    From my personal experience on my rxp with similar mods, 14/19 with the stock ecu worked better than the 15/20 and once I went with a Lescooke 8650 tune and retainers the 14/19 was spinning, the 15/20 with some tweaking on my old set up worked awesome. Climate, altitude etc will play a part in your skis performance. Greenbullet knows his skis so I'd definitely take his advice especially if your going to continue modding it.

  7. #6
    AtoMIC_OraNGE greenbullet's Avatar
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    due to climate changes that 14/19 will slam the limiter easy. The 15/20 is a solid base and possibly bend 1-2 mm
    also he is using stock Ecu at 8100. I've had 3 props at one time lol different bends. All different results. 15/20 took the win. Then it all went down hill with a big charger now I have a 15/24 at 8800 lol

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  9. #7
    SLASHER's Avatar
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    Quote Originally Posted by greenbullet View Post
    due to climate changes that 14/19 will slam the limiter easy. The 15/20 is a solid base and possibly bend 1-2 mm
    also he is using stock Ecu at 8100. I've had 3 props at one time lol different bends. All different results. 15/20 took the win. Then it all went down hill with a big charger now I have a 15/24 at 8800 lol
    15/24 at 8800 that's serious ...

  10. #8
    RXPJAY's Avatar
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    Quote Originally Posted by greenbullet View Post
    due to climate changes that 14/19 will slam the limiter easy. The 15/20 is a solid base and possibly bend 1-2 mm
    also he is using stock Ecu at 8100. I've had 3 props at one time lol different bends. All different results. 15/20 took the win. Then it all went down hill with a big charger now I have a 15/24 at 8800 lol
    What he said. I have similar mods with the et127. I was on the stock limiter with a 15/20.

  11. #9
    AtoMIC_OraNGE greenbullet's Avatar
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    Quote Originally Posted by SLASHER View Post
    Quote Originally Posted by greenbullet View Post
    due to climate changes that 14/19 will slam the limiter easy. The 15/20 is a solid base and possibly bend 1-2 mm
    also he is using stock Ecu at 8100. I've had 3 props at one time lol different bends. All different results. 15/20 took the win. Then it all went down hill with a big charger now I have a 15/24 at 8800 lol
    15/24 at 8800 that's serious ...
    big gains from Chris "s east side ported head makes good power.
    Before I put the ski to bed for the winter I was spinning 8700-8800 with a 15/23-24 in cold air. If I pull bend out and spin 8900-9k I'll be fast but this is still on a bone stock bottom end! Don't want to risk it Won't rebuild until I need to. If it pops it's the chance we all take for modding skis

  12. #10
    WBoulton's Avatar
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    Ran this set up and used a 15/20r

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