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  1. #1

    Join Date
    Mar 2013
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    Melbourne, Australia
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    Exclamation Is a 15/22 prop to big??

    Hi guys, I need to get my prop sorted I currently have a 15/20 and I am on the limiter. I understand it is different in most applications but I'm looking for other people experience with similar setup.
    do you think a 15/22 is too big for the following mods..

    2005 RXP
    -x charger
    -fizzle intercooler
    -rrfpr (currently set at 61psi static)
    -hks ssqv
    -water box mod
    -flow through exhaust
    -rude fuel controller
    -mtx-l a/f gauge
    -boost gauge
    -riva opas block off
    -riva wedge and vts rod
    -worx intake grate
    -50lb injectors
    -riva ecu with 8650 limiter
    -titanium valve retainers
    -4 inch intake

    Interested to see what others are running before I get a new prop.. How far can I repitch the 15/20 if that is a better option?


  2. #2
    AtoMIC_OraNGE greenbullet's Avatar
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    pitch the 15/20 according to rpms

  3. #3
    Turbonut's Avatar
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    Hey, that parts list looks familiar. You shouldn't have to bend the 15/20 too far. The extra rpm of the Riva takes a bit more to drive than what you had.
    Good luck getting it sorted. Then wait for the turbo bug to bite

    I still think you need my 3 blade!!

  4. #4
    RXP 260 X Short Course Veteran RXP244's Avatar
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    Auckland, New Zealand, New Zealand
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    Stick with the 15/20. I was running the 15/22 with a C-kit at 8600 pushing 15-16psi. You won't have the HP. Loose the BOV (just my opinion) I never ran one, too much potential to fail. Should be a solid 80+

    Good Luck.

  5. #5

    Join Date
    Mar 2013
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    Quote Originally Posted by Turbonut View Post
    Hey, that parts list looks familiar. You shouldn't have to bend the 15/20 too far. The extra rpm of the Riva takes a bit more to drive than what you had.
    Good luck getting it sorted. Then wait for the turbo bug to bite

    I still think you need my 3 blade!!
    Let me know when you upgrade your turbo kit!

  6. #6

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    Mar 2013
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    Thanks guys I will be sticking with 15/20 hoping to run 80+ but I reckon I have a lot of tuning to do to get there!

  7. #7
    i hate my bipolar disorder its great
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    you wont get near 8650 with a 15/22 and those mods.
    the most i could get out of my 15/22 was 8150rp,
    running a et137, cooler, headwork valves

  8. #8
    i hate my bipolar disorder its great
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    Quote Originally Posted by codzy View Post
    Thanks guys I will be sticking with 15/20 hoping to run 80+ but I reckon I have a lot of tuning to do to get there!
    im on the look out for a 15/20 kinda either that or im going to pitch back my 15/22

  9. #9

    Join Date
    Mar 2013
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    Melbourne, Australia
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    im on the look out for a 15/20 kinda either that or im going to pitch back my 15/22[/QUOTE]

    I just sold one on eBay yesterday.. Dissapointing I could have hooked you up!

  10. #10
    b_dolla44's Avatar
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    Noblesville, Indiana United States
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    A couple things don't add up...
    How sure are you that its a stock x charger? Typically out would need to depitch a15/20 to turn it to 8500+ with just a x charger.
    Also, if your running the riva ecu and 50s with an X charger your shouldn't need the rrfpr (BTW: i am not tellling you to remove it. Just simply makeing an observation.)

    You either have an upgraded wheel in the sc. Or your prop has already been depithed significantly....

    What speeds?

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