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  1. #1

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    Fuel Pressure on RRFPR

    OK i have a fuel pressure question, when i put key in the pressure goes up to 60 where i have it set. However, when i turn ski on it drops to 50 or a lil over???Is that normal?? What do i need to do if anything?? Also can u guys post safe running afr number for idle, mid, full speed etc....Many thanks


  2. #2
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    Quote Originally Posted by WannabeGoing 80 View Post
    OK i have a fuel pressure question, when i put key in the pressure goes up to 60 where i have it set. However, when i turn ski on it drops to 50 or a lil over???Is that normal?? What do i need to do if anything?? Also can u guys post safe running afr number for idle, mid, full speed etc....Many thanks
    Yes, that's normal.. What your looking for is the number that comes up as soon as you plug in your lanyard.. I've seen the stock ECU boats very rich at idle 11 or so.. your biggest concern is WOT you want to see 11.9-12..

    What you really want to watch is to make sure the pressure on your RRFPR is rising as you increase the boost. I seen alot of stock ecu boats having problems with the fuel pump not keeping up

  3. #3
    Water4fire's Avatar
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    Quote Originally Posted by Alex13 View Post
    Yes, that's normal.. What your looking for is the number that comes up as soon as you plug in your lanyard.. I've seen the stock ECU boats very rich at idle 11 or so.. your biggest concern is WOT you want to see 11.9-12..

    What you really want to watch is to make sure the pressure on your RRFPR is rising as you increase the boost. I seen alot of stock ecu boats having problems with the fuel pump not keeping up

    Good info Alex and then when the stock fuel pump is not keeping up it is time for a walbro intank pump replacement.

    .

  4. #4

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    I dont know if it matters he has a RIVA ecu not a stock ecu.

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