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  1. #1
    northern irish 250 ultra's Avatar
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    Sep 2008
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    northern ireland
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    Smile 250 Ultra Fuel Pressure Settings

    Hi Everyone I Have Just Joined Up Iam From Northern Ireland And I Have Just Done Some Mods On My 250 Ultra Which Include
    Stage 1 Kit
    Stage 2 Kit
    Riva Racing Exhaust,ride Plate,intake Grate,sponsoons,air Induction Kit,fuel Pressure Regulator,larger Injectors,

    My Problem Is That Since All The Mods Have Been Completed I Do Not Notice Any Great Improvements In Performance So Today I Read Through All The Relevant Paperwork That Came From Riva To Make Sure Everything Was Fitted Correctly, I Noticed That Riva State That The Fuel Pressure On The Regulator Is Set At 37 Psi From Factory So I Borrowed A Fuel Pressure Tester And Fitted This To My Ski The Fuel Pressure Was Only 25 Psi??

    I Then Set The Fuel Pressure At 37 Psi As Per Factory Settings But As Yet I Have Not Had The Ski On The Water To Test The Performance Does Anyone Know If I Will Have A Noticeable Improvemant In Performance?? Any Help Would Be Much Appreciated As My Local Dealer Is Not Much Help As No One Has Ever Done Any Mods On 250's Here!!


  2. #2
    Formerly Ultra250 TN Aquaholic6801's Avatar
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    Feb 2007
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    Old Hickory,Tn
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    Welcome to the Forum..............


    Does either one of those Riva Stages come with a Pulley kit?

    If it did you need to be running a AFR meter to monitor your Air/Fuel mixture.......

    And how long did you ruin it with low Fuel pressure, because with that low of fuel pressure I would say you were running very lean............

  3. #3
    northern irish 250 ultra's Avatar
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    Sep 2008
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    Smile

    Quote Originally Posted by Ultra250 Tn View Post
    Welcome to the Forum..............


    Does either one of those Riva Stages come with a Pulley kit?

    If it did you need to be running a AFR meter to monitor your Air/Fuel mixture.......

    And how long did you ruin it with low Fuel pressure, because with that low of fuel pressure I would say you were running very lean............
    HI YES THE ONLY PULLEY ADDED IS A SMALLER SUPERCHARGER PULLEY I WAS ONLY RUN FOR A FEW MINUTES ON LOW PUEL PRESSURE THANKS..

  4. #4
    nighttrain nighttrain's Avatar
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    Aug 2008
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    I know you guy's like speed but I'm so happy with my current factory specs that I really don't feel a need for change. Plus when it's wavy, you can't go that fast anyhow but it feels cool to have a Ski that you don't have to really do a thing, Unless your hocked on Adrenaline Rush LOL .

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