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  1. #1
    geowelsh's Avatar
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    Apr 2011
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    Looking for a waterbox, advice, have one? 2004 RXP

    2004 rxp, rear air, 14/19, wedge, worx grate, RE Block off's

    Working on getting the ski faster, have heard the free flow exhaust on a stock waterbox. Wouldnt mind a bit louder if the gains are there.

    Soon to come:
    intercooler
    x-charger
    injectors
    valves


  2. #2
    b_dolla44's Avatar
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    Apr 2008
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    Noblesville, Indiana United States
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    In order (just my 2 cents)
    Riva waterbox
    TDR/Greenhulk box
    modded/gutted+ thru hull
    Thru hull + stock box
    PS: several people have said they noticed no major gains in rpms from modding exhaust....

  3. #3

    Join Date
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    Plainfield, IL
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    +1. Get the riva. Expensive as all hell. But never has to come out again like some others require to remove the s/c.

    Plus it sounds great. Ive seen a TDR in person and they are very nice boxes also.

  4. #4
    Water4fire's Avatar
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    May 2005
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    New Braunfels TX.
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    PM sent I have a very nice GH waterbox. IMO they sound the best and boy do they make SCer removal so easy.

  5. #5
    Jason Russo's Avatar
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    Jul 2008
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    Bradenton,Florida
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    riva waterbox sounds AWSOME!!!

  6. #6
    asphalt, dirt, and water are my playgrounds. ViperRy's Avatar
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    Mar 2008
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    MD
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    203
    I put an 08 waterbox/midpipe, shortened and rewelded on my 05. Sounds wicked.. I've read some say they've picked up 50rpms from an 08 box a while back, but I can't verify myself as I did a bunch of mods at once.

  7. #7
    I was looking at riva rear exhaust kit online for $259 but it sounds like riva water box is the way to go?? But my question is (I have 09rxp) do I need to make any other mods to fit riva waterbox, it says u do on the P-X nut nothing on the rxp! Also do .I have to buy the rear exhaust kit for am additional 129.00??

  8. #8
    West Texas RXP skoepp's Avatar
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    Oct 2007
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    west texas
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    You have to remove the opas system on any ski to fit the RIVA or TDR/GH water boxes.

    I think on x ski you can leave OEM ic plumbing if go with RIVA or TDR.

    If you stay with OEM box and go thru Hull ic has to pretty much be relocated.

  9. #9
    geowelsh's Avatar
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    GH soon to be installed, Thanks water4fire

  10. #10
    Does anyone know what riva charges to install the waterbox??

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