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  1. #1

    Join Date
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    Bad stock fuel regulator...what are my options to replace it?

    I recently discovered that I have a bad OEM fuel regulator. (allows fuel to pass at max pressure...verified with pressure gauge) I just want to make sure that I know all of my options before I decide what to replace the bad regulator with.

    From my research on this site:

    1. Buy a new OEM fuel module - not really leaning towards this option as it is the most expensive and all I need is the regulator.

    2. RIVA RRFPR - Would like more information on this setup as it seems ideal as it looks to be plug and play. My biggest question with this setup is can I just take it out of the box and install it and forget it (100% stock application) or is it something I am going to have to tweak to get the ski to run right. I read somewhere that it comes preset to 60 psi which is at the top end of the stock specs. Am I going to have to install an AFR gauge with this setup to assist in dialing it in? In the end I am looking for plug and play with not a lot of tweaking involved.

    3. Build my own RRFPR setup using the RIVA tank adapter. I am open to this option but have not seen a good example of one built. Not sure of a good aftermarket RRFPR model to go with.

    My future plan is to keep the ski stock as I am only an occasional rec rider (04 RXP stock).

    Please educate me on my options


  2. #2
    Nothin' better than Doo'in it! BigDaddyRXP's Avatar
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    If your going to keep your ski stock, just replace your oem regulator. Post a "want to buy" in the classified section.... probably everyone here has at least one good one sitting in a box somewhere in there garage, or attic.

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  4. #3
    brendanm's Avatar
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    +1 there are always a heap floating around, I picked one up for next to nothing.

  5. #4

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    alright I posted an ad to buy one used...anyone know the part number or a replacement part number?

  6. #5
    brendanm's Avatar
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    You just need one from an 04-08 rxp or rxt. A 185 unit will not work.

  7. #6
    skigolfnut's Avatar
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    are you sure it is not your fuel pump?
    my fuel pressure was having a hard time keeping up with my new ET-137 wheel, and I was told it was the fuel pump,
    I pulled my pump and replaced it with a Walbro replacement pump,
    it cured my problems,
    see pictures of my pump and filters from my 06 rxp
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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  8. #7

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    The fuel pump has already been changed out with a new bosch OEM pump. After the install of the new bosch I went to verify correct fuel pressure and I got pressure readings of 80+ psi coming off the fuel regulator (checked after placing key on dess post). Previous to all of this the ski sat for a few years which caused the fuel pump to crap out and now I believe it has also caused the diaphragm in the regulator to give out, causing max pressure to been seen coming out of the fuel pump/regulator.

  9. #8

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    So does anyone know if I can just set the Riva RRFPR to said pressure of OEM fuel regulator and not have to mess with tuning with an AFR gauge? My ski is stock 04 RXP.

  10. #9
    boost junkie skidoochris's Avatar
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    YES any RRFPR can be set to a static psi (58psi oem)
    you just do not hook up the reference line

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