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  1. #1
    SHOin OFF 02gpR's Avatar
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    Help with RXP Modifications ! ! !

    hey everyone, i have some questions. below is the list of what i already have.

    Riva Power Filter
    Riva Rear Exhaust
    Riva Pump Wedge
    Riva SC Clutch Washers
    Solas 14/19R Impeller
    O.P.A.S. Block Off
    Riva Blow Off Valve

    These are the things i have already ordered

    Catch Can/Oil Breather System
    Riva Thermostat Kit
    Riva Top Loader Intake Grate
    Riva VTS Extension Rod

    Here are my questions,

    First, I want to upgrade to the S3 SC housing and Impeller WITHOUT having to change my ECU. i have been reading and many have this setup with #42 injectors and stock ECU. my question is, if i do this setup with the Riva #50 Injectors will it work with stock ECU?

    having done this, my next question is, if i do this setup, would i need to change my impeller to the Solas 15/20R?

    another question is changing the Ceramic SC Bearing Set worth it??

    is the Riva Pro-Series Reduction Nozzle worth getting as well??

    and my last question is, if i wanna do the Riva Power Cooler Kits, does that replace my Blow Off Valve??


  2. #2
    The ski's have taken a "backseat" to the Corvette DarthAWM's Avatar
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    1. I don't know sounds like it could be rich, you could use a rising rate fuel pressure regulator and stock injectors and be ok.

    2. Probably I would try adding to you current prop first.

    3. Only if you are already rebuilding the SC

    4. It can be the interchangable nozzle rings can aid in tuning.

    5. There should be a provion in the IC tubing for the BOV

  3. #3
    JFizzleJR's Avatar
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    The 15/20r is the prop you will want. 50# injectors would be too much unless you're going with a RIVA ECU or Rude Fuel Controller with something to push bigger psi. The RIVA power cooler kit has a flange for the BOV, but most of us think they're worthless on our application. I wouldn't waste the $ on ceramic bearings unless you're not going to tear it apart every 50-100 hrs like seadoo recommends. The reduction nozzle is useful, but probably not worth is unless you plan on dialing in your ski perfectly and obsess over every tenth of a mph in top speed like us fools.

  4. #4
    SHOin OFF 02gpR's Avatar
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    sounds good, i just noticed that rivaracing has #42 injectors, i had thought Riva only offered #50.

    so if i do the #42 Injectors with the housing and impeller without the ECU, would i be ok??

  5. #5
    JFizzleJR's Avatar
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    Yes. I don't think RIVA sells 42s, but I know Jerry does.

  6. #6
    SHOin OFF 02gpR's Avatar
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    I didn't think they did either until I saw on their website. Explain a little more on how I can install the power cooler kit with my blow off valve? Or is the blow off valve going to waste?

  7. #7
    JFizzleJR's Avatar
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    The pro series intercooler kit comes with a built-in BOV..If you have the one that's attached to an elbow and connects from the supercharger outlet to the throttle body, then yes that will go to waste unless you tear it apart and make it work with some other piping (which I've never heard of happening).
    Last edited by JFizzleJR; 02-05-2008 at 01:12 AM.

  8. #8
    Student of Speed rxpwhistler1's Avatar
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    BOV

    From what I have read (again not my knowledge) running any BOV is not really needed and just a potential boost look. Run metal washers and good to go.

  9. #9
    SHOin OFF 02gpR's Avatar
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    what about going straight to a skat 15/19R? or will it not be needed with the setup im doing??

    upgrading to a power cooler kit is the way i wanna go. just sucks that im going to have to give away the BOV.

    is it even neccessary to upgrade to the power cooler kit?? it'll make a big difference correct??

    what's the difference between the regular power cooler kit and the one with the pro-series blow off valve? just the blow off valve?? any difference?? better air flow? more HP?

  10. #10
    SHOin OFF 02gpR's Avatar
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    Anyone? ? ?

    with upgrading to a S3 SC and #42 Injectors, would jumping to a Skat 15/19R be too much??

    or will the Solas 15/20R be just right? ?

    Thanks guys ! !

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