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  1. #1
    Lbaronio's Avatar
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    RXP 08 going 255HP and more

    I have a 08 RXP with this mods:
    -Riva Air intake
    -RIVA Rear Exhaust
    -Riva Intake grate
    -2 degree wedge pump
    -RXPX OEM supercharger
    -RXPX OEM Intercooler
    -RXPX RS Injectors
    -OPAS blocked

    3 questions:
    What SOLAS impeller i need (15/20, 15/21 or 15/22)?
    Did i need to change the fuel pump?
    Whats the next change i need to do?
    thanks in adavanced


  2. #2
    suck my wake's Avatar
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    Go with the 15/22 and you will need either the stock X Ecu or an aftermarket rotax or Riva. The stock X Ecu has different programing than the stock RXP does. If you go with a Rotax or Riva you will need to upgrade the valvetrain also.

  3. #3
    Lbaronio's Avatar
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    Thank you very much..., one more question (whats the difference in between 15/22 and 15/22R.

  4. #4
    suck my wake's Avatar
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    Quote Originally Posted by Lbaronio View Post
    Thank you very much..., one more question (whats the difference in between 15/22 and 15/22R.
    If its a solas.....nothing

  5. #5
    Lbaronio's Avatar
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    Ok, i just bought the 15/22 Solas, but i have 1 more question...?

    I would need the X ECU only or i also need the rrfpr...., or only the rrfpr ?
    thanks ina davanced
    Last edited by Lbaronio; 06-21-2010 at 06:38 AM.

  6. #6
    Lbaronio's Avatar
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    i just bought the 15/22 Solas, but i have 1 more question...?

    I would need the X ECU only or i also need the rrfpr...., or only the rrfpr ?
    thanks in advanced

  7. #7
    R88ory RXP's Avatar
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    Just get the Riva RRFPR.

    Set it to 58-60 with just the key on the post engine not running and check you are getting around 70psi fuel pressure at full boost.

    You will be fine then R88

  8. #8
    Lbaronio's Avatar
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    I would have to wait at least 1 month for the RRFRP from Riva beacuse i live in PERU...
    The question is if i could use a racing regulator (mega racing) like the one for a racing car...as in the photo attached or i would have any trouble with that???
    thanks
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  9. #9
    R88ory RXP's Avatar
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    Quote Originally Posted by Lbaronio View Post
    I would have to wait at least 1 month for the RRFRP from Riva beacuse i live in PERU...
    The question is if i could use a racing regulator (mega racing) like the one for a racing car...as in the photo attached or i would have any trouble with that???
    thanks
    That regulator would prob work just fine but the stock regulator has to be removed from the top of the fuel tank and then you have to use a insert to replace it that has the feed and return lines from the regulator attached to it.

    If you take a look at the riva unit ofr do some reasearch on here you will see lots of pics and possibly be able to get 1 made localy to you.

    R88

  10. #10
    Lbaronio's Avatar
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    Im searching some old posts and i think going either way (X ECU or RRFPR) will do the same?? one digitally and the other manually? im right?

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