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  1. #1
    Seadoowang's Avatar
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    RIVA Waterbox with resonator= effect ?

    RIVA Waterbox with OEM resonator (not through hull) is there any input/effect,
    or I can just as well have OEM exhaust.
    I've done a lot of engine upgrade my XP260 but do not want so much noise
    Fine if anyone has any experience with it so I can make the right choice


  2. #2

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    Seems like money could be spent somewhere else for more gains. It will be louder not sure how much though. Obviously the resonator and the stock water box where probably built to keep the noise to a certain level. If noise is a concern I wouldn't bother.

    What other mods do you have?

  3. #3
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    The OEM waterbox is restrictive, the resonator is not...The resonator is there just to cancel out specific sound waves/frequencies that are annoying.

    You will gain power with the swap out, while retaining your eardrums by keeping the resonator in...Without the resonator, the pump tunnel becomes a pipe organ by reflecting sound waves off the chamber and water.

    If you gut the OEM waterbox, you will have the same power gain as the Riva box....with a factory look.

    If you go with the Riva box, you get the same power gain as the gutted box....and the ability to remove the SC without unbolting the waterbox and exhaust system...

  4. #4
    West Texas RXP skoepp's Avatar
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    Am I missing something ?
    Without moding the riva outlet how would one reroute thru the resonator?

  5. #5
    Banned User
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    Quote Originally Posted by skoepp View Post
    Am I missing something ?
    He stated he has an RXP260, which means he has to use this box...
    http://www.4-tecperformance.com/index.php?main_page=product_info&cPath=18_3&produc ts_id=2168

  6. #6
    West Texas RXP skoepp's Avatar
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    My bad.

  7. #7
    GRF + DashPac:) seadoo02xp's Avatar
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    I ran a turbo through a oem gutted box and the factory resonator. It was very quiet. Kinda stealthy actually . It was pretty cool and performed just fine

  8. #8
    Seadoowang's Avatar
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    Thanks to many fine answer, I have V-Tech, rud2, 4 "Air Filter, RRFPR, Valve Train Upgrade Kit, 629 cam and considering exhaust to larger intercooler

  9. #9

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    I've been thinking about installing a riva waterbox on my 11 rxtx and keeping the stock resonator as well because i ride on a lake that has lots of houses and people would be upset with the noise of a through hull exhaust system, riva says you are supposed to install their free flow or through hull system with their box but the outlet location is in the same spot as the factory so i'm betting it will work just fine

  10. #10
    dpracing's Avatar
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    Anybody else running a gutted box or a Riva box with the stock resonator?

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