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  1. #1
    Fastest in my cove sfackett0's Avatar
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    RRFPR suppose to be at 60psi right?

    Put the ski in today, fuel pressure is at 57/58, looks to be at 68/69 at WOT. Idle rpms are 1750/1800, WOT rpms are 8100/8150. Ive read a few different threads, most say the idle fuel pressure should be between 58-60, so should I bump it up to 60 to be safe?


  2. #2
    Moderator beerdart's Avatar
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    Its impassable to tell without knowing your WOT AFR.

  3. #3
    Fastest in my cove sfackett0's Avatar
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    yea, yea i know without an AFR reading you cant dial it in. I was just wondering since the directions say that they are set at 60 from the factory, but owners should check before riding.

  4. #4
    Mod less, ride more! troyheb's Avatar
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    I started at 60 and wound up at around 45 psi base pressure. Thats with a Riva pro Xcharger upgrade, 48's and a Riva ecu. Like beerdart says, no way to know unless you monitor afr.

  5. #5

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    I'm at 48 psi w/ my riva ecu, 55 lb. injectors and an etech 140-- AFRs are 12.0 +/- .1 at a 102.6 correction factor.

  6. #6
    Fastest in my cove sfackett0's Avatar
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    This would be on a stock ECU, x-charger, 42lb injectors, external XS. I would have loved to been able to set up my ski so I could have monitored the AFR, but wasnt in the budget. Everyone told me many have ran this setup no problem i was just looking to confirm that it should be set at 60psi. But i do understand its pointless to ask without a AF reading

  7. #7
    Mod less, ride more! troyheb's Avatar
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    Out of the box from Riva it should be set at 60. Maybe someone with a similar setup to yours will chime in and let you know what they have theirs set at. I would guess 60 psi you might be rich.

  8. #8
    speedskixp's Avatar
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    Quote Originally Posted by sfackett0 View Post
    This would be on a stock ECU, x-charger, 42lb injectors, external XS. I would have loved to been able to set up my ski so I could have monitored the AFR, but wasnt in the budget. Everyone told me many have ran this setup no problem i was just looking to confirm that it should be set at 60psi. But i do understand its pointless to ask without a AF reading
    As others have said it's tough to say exactly but every ski I set-up with that exact basic set-up I have found that around 70lbs wot fp is where they end up in decent conditons. for 12:1ish A/F and that is on the safe side compared to a stock x boat. If you are at high elevation it will be even richer and 65lbs wot may be better.

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