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  1. #1
    Biggsw784's Avatar
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    Need some info with my new set up

    I have a 2004 RXP and I took it out tonight for the first time with the new set up. I installed a x charger with a et 137 with 3mm spacer, fizzle ext intercooler, 42 lb bosch injectors, billet fuel rail and a rrfpr. I also installed a 15/20r solas prop also. It runs out pretty good and I got my afr to about 12.3 @ wot which inturn gets me pretty fat at idle 10.9-11.2. Thats not too much of a concern compared to it cavitating when I rip it from a idle. It cavitates pretty good but if I give it about half throttle or so and get going and pin it, it pulls pretty hard. It has a new 15/20 prop and wear ring and it has a new carbon seal and bellow also. There is something that I have a question about but really dont think it would have anything to do with it but I bought a 2006 RXT also and it needed a prop and wear ring so, I took the pump out of my RXP which had a new 14/19 prop and I just stuck it on my RXT and took the RXT pump and put my new 15/20r prop and new ring in my RXP. Is there a difference in the pumps??


  2. #2
    wotxxxsd's Avatar
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    If your banging the limiter out of the hole tune your prop to get more of a jump out of the hole.

    There are threads on how to tweak your prop to get max launch from 0 mph..
    Once you do get her adjusted you will have to massively lean forward to try to keep her out of the air...

    Rip on.....

  3. #3
    AtoMIC_OraNGE greenbullet's Avatar
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    your on the limiter..you need a bigger prop or pitch a 15/20. you should get bosch 48s with that charger... i ran a rrfpr and a begi with the bosch 48s with a 15/22 r prop and was perfect at 8050-8100rpm could dial in at idle 12.5-13 mids at 13.1-13.5 and wot at 11.9

  4. #4
    AtoMIC_OraNGE greenbullet's Avatar
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    get in touch with boost-a-holic (troy) he is in texas.. running a etech 137x4mm once he gets his bugs with his cmd all sorted im sure he would help you out

  5. #5
    Biggsw784's Avatar
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    Quote Originally Posted by greenbullet View Post
    your on the limiter..you need a bigger prop or pitch a 15/20. you should get bosch 48s with that charger... i ran a rrfpr and a begi with the bosch 48s with a 15/22 r prop and was perfect at 8050-8100rpm could dial in at idle 12.5-13 mids at 13.1-13.5 and wot at 11.9
    I was told that the 42s would probably work better down here in the hot climate of texas??

  6. #6
    Biggsw784's Avatar
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    Quote Originally Posted by wotxxxsd View Post
    If your banging the limiter out of the hole tune your prop to get more of a jump out of the hole.

    There are threads on how to tweak your prop to get max launch from 0 mph..
    Once you do get her adjusted you will have to massively lean forward to try to keep her out of the air...

    Rip on.....
    Yes sir, I am hitting the limiter on a wot take off. So you think it is just the prop needing tuning??

  7. #7
    RXPJAY's Avatar
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    For sure with that wheel. I had to pitch mine 1.5mm back with almost same set up with the 127 wheel, and i could use a little more.

  8. #8
    AtoMIC_OraNGE greenbullet's Avatar
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    Quote Originally Posted by Biggsw784 View Post
    Quote Originally Posted by greenbullet View Post
    your on the limiter..you need a bigger prop or pitch a 15/20. you should get bosch 48s with that charger... i ran a rrfpr and a begi with the bosch 48s with a 15/22 r prop and was perfect at 8050-8100rpm could dial in at idle 12.5-13 mids at 13.1-13.5 and wot at 11.9
    I was told that the 42s would probably work better down here in the hot climate of texas??



    you need bosch 48s

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