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  1. #1
    Brd-Prey's Avatar
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    Riva RRFPR on a 2012 RXP-X

    Installed the RRFPR this afternoon, as with the catch can Riva didn't properly update the instructions for the T-Hull or try to fit their own product. The instructions say for the 2012 RXP-X to mount it in the center in the engine opening lip. We have no lip. No big deal, I welded a little piece of stainless on the mount and flipped the mount on the regulator. I also installed the vacuum in the port they provide on their manifold descreen kit. Will test tomorrow but I don't expect a performance change. I think this is better than their layout and the gage is right side up!

    This image shows the install plus an arrow for the silicon elbow I had to buy to make their Catch Can work, an arrow for the bracket and an arrow for the vacuum hook up for rising rate.



    The Bracket mod.



    The install all done.



  2. #2
    GRF + DashPac:) seadoo02xp's Avatar
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    thats cleaner than my install, i mounted it in the exact same spot i just bent the hell out of the bracket to make it work

  3. #3
    ADAMBOMB's Avatar
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    Whats the deal with the breather extended? You can just bend the mount a little and it fits fine. Also Where did you mount your AFR gauge?
    Last edited by ADAMBOMB; 12-08-2012 at 10:46 PM.

  4. #4
    Brd-Prey's Avatar
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    I could have bent it but I didn't. I put a 45deg hose it works just fine. I haven't installed an AFR gage I'm STILL waiting for an Athena ECU.

  5. #5
    ADAMBOMB's Avatar
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    Quote Originally Posted by Brd-Prey View Post
    I could have bent it but I didn't. I put a 45deg hose it works just fine. I haven't installed an AFR gage I'm STILL waiting for an Athena ECU.
    How do you plan on adjusting the rrfpr without seeing if you are lean or rich?

  6. #6
    GRF + DashPac:) seadoo02xp's Avatar
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    I agree, there is no sense in running Athena if you aren't going to monitor afr,

  7. #7
    Rt-HemiBoY's Avatar
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    Re: Riva RRFPR on a 2012 RXP-X

    Quote Originally Posted by ADAMBOMB View Post
    Quote Originally Posted by Brd-Prey View Post
    I could have bent it but I didn't. I put a 45deg hose it works just fine. I haven't installed an AFR gage I'm STILL waiting for an Athena ECU.
    How do you plan on adjusting the rrfpr without seeing if you are lean or rich?
    Agree to that im in the same page rite now why would you put a rrfpt without knowing of you really need it how would you adjusted now without monitoring what base pressure you gonna run it????

  8. #8
    Brd-Prey's Avatar
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    I never said I wasn't going to monitor AFR in the future! I'm not dumping 5K into my ski all at once. I have NO Intention of adjusting PSI now!
    The mechanic at Riva where I bought my ski said, He has seen more than a few ski's have problems (burned pistons) because in the last few years the quality control on the stock fuel pressure regulator has allowed them to run as low as 54 PSI. Which will not cause a problem but if I plan on changed the RPM limit up to 8350 or higher then it is a safe move to put in the Pressure Regulator. Sounds like good insurance to me.
    Plus the adjusting of the regulator is a poor substitute for adjusting fueling as it goes across the whole rpm range. With the Athena I'm hoping I can make specific fueling adjustments to the tables in specific rpm ranges. That how I tune my car (which I use EFI Live), which has 2 Wideband Sensors one in both header tubes!

    but thanks for the concern

  9. #9

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    Click image for larger version. 

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    1st installation 4" Kana flex air intake.
    2nd installation, LC1/AFR. Ski found to be very lean from the factory. 14.5+ AFR @ WOT.
    3rd installation, Walbro fuel pump & RRFPR. Added fuel pressure until AFR was 11.9 @ WOT.
    Ski responded with improved HP and speed. Ski is now on the limiter.
    Rivas Catch can fit after bracket was bent in a little towards the engine.
    More mods to follow.....

  10. #10
    Brd-Prey's Avatar
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    Post a pic of your WB sensor please

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