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  1. #1

    Post 2012 Rxpx Build in Planning .. Help

    Hey GreenHulk! This is my first post but I've been reading post for a while now.

    So I wanted to get input from the experienced on building Skis.

    I have a 2012 Rxpx and Im planing on getting 80 with as little additives as possible.

    Possible Parts List:
    Riva XX charger
    Riva Athena Ecu/Vtech tuned
    Gen3 IC
    50# Bosch Injectors
    Riva Rear Exhaust
    Les Cooke Nose Cone
    Riva Valve Spring Kit
    Prop - Which I need help with, looking for whole shot and mid range

    Tell me what you guys think


  2. #2
    C Doo's Avatar
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    Welcome to the forum....

    Go with the ET charger over the riva. Everyone is raving about them.... Prop, i run the 15/20R. But with that much power u I think u could prob handle a 15/21R or 22R

    This ski should be an arm tearing beast!

  3. #3

    Join Date
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    Im pretty sure the Riva XX, et137, and mini-rude will give very similar/the same performance. I am currently in the midst of installing the Riva XX, along with A/F monitoring. I have everything else you listed except the 50lb injectors. They are not needed as your ski has 48s, and can handle the added boost with the addition of a fuel pressure regulator. Hope to have the ski out in the next couple days for some testing, and seeing where I need to go with the 15/20R prop that I have installed.

  4. #4
    C Doo's Avatar
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    Agreed that any of those chargers will be all around the same boost/ performance. Anyone will do.

    U might want to go a 4inch air intake too.

  5. #5
    Martin RXT-X's Avatar
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    Welcome to the forum
    It took me a lot of hard work to get my 2012 RXP-X to 82 MPH. The things on your list I would change are Charger: 3 Rude charger, ECU: Motec (as it logs and lets you see what your changes are doing), Bigger injectors, get the intercooler pipeing to match the Gen 3 and a 4" air intake. As for Prop depends where and what you are riding in.

    Quote Originally Posted by Cato3D View Post
    Hey GreenHulk! This is my first post but I've been reading post for a while now.

    So I wanted to get input from the experienced on building Skis.

    I have a 2012 Rxpx and Im planing on getting 80 with as little additives as possible.

    Possible Parts List:
    Riva XX charger
    Riva Athena Ecu/Vtech tuned
    Gen3 IC
    50# Bosch Injectors
    Riva Rear Exhaust
    Les Cooke Nose Cone
    Riva Valve Spring Kit
    Prop - Which I need help with, looking for whole shot and mid range

    Tell me what you guys think

  6. #6
    I was doing Mostly RIVA parts because I wanted to support them.. Plus they the only person that can get to ship here.

  7. #7
    Martin RXT-X's Avatar
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    Where are you?

    Quote Originally Posted by Cato3D View Post
    I was doing Mostly RIVA parts because I wanted to support them.. Plus they the only person that can get to ship here.

  8. #8
    SJL Custom's Avatar
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    Personally Id go with the ET charger. Lighter and stronger, more efficient, and easier on clutches. Three big points there

  9. #9
    Quote Originally Posted by Martin RXT-X View Post
    Where are you?
    Im in Cayman Islands havent really tried getting other parts here before.

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