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  1. #1
    ou812's Avatar
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    2021 RXPX fuel pump, etc...

    Is seadoo using the same fuel pumps and/or, does the ECU still shut down the signal to the pump over 10amps? I have a friend with a '21 PX that's going to rev about 8800rpm,

    JL parts to be installed....

    9200 limit reflash
    Exhaust spacer
    direct 4" air intake
    springs and retainers
    1000cc inj's
    catch can
    Cam...
    Keeping the exhaust stock but I question the resonator...
    I probably should get the ARP cam sprocket bolts too..

    Nothing was mentioned about fuel pump or flywheel bolts.. I'm ASSuming a fuel pump/relay will be needed...
    Shoot me some advice and info please...
    Thanks!


  2. #2
    JT jpt7779's Avatar
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    https://www.4-tecperformance.com/ind...oducts_id=5470

    Ive been using the Aeromotive fuel pump / relay kit for years on my turbo ski with no issues.
    Looks like Riva has stuck their sticker on the fuel pump, so it costs $100 more! Stock fuel pump can’t keep up and will cause the injectors to have a high duty cycle.

    So yes, fuel pump/relay plus flywheel bolts are a must IMO.

  3. #3
    ou812's Avatar
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    Quote Originally Posted by jpt7779 View Post
    https://www.4-tecperformance.com/ind...oducts_id=5470

    Ive been using the Aeromotive fuel pump / relay kit for years on my turbo ski with no issues.
    Looks like Riva has stuck their sticker on the fuel pump, so it costs $100 more! Stock fuel pump can’t keep up and will cause the injectors to have a high duty cycle.

    So yes, fuel pump/relay plus flywheel bolts are a must IMO.
    Thanks,
    I do have another new Grams 320 pump and can get the (pre riva) Aeromotive 340 down the street for 95.00
    Man, I really don't want to chop into the harness and that Pump relay adapter for $220.00 is crazy! Or is it?

  4. #4
    JT jpt7779's Avatar
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    http://greenhulk.net/forums/showthread.php?t=272608

    see post #22 for another fuel pump wiring solution with heavy gauge wiring. You could build it yourself for about $30, with the correct wiring components or pay the man.

  5. #5
    ptscon's Avatar
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    Unless something has changed on recent models you just need to cut 1 wire at the pump plug to install a relay. You could even get away with not cutting if you take a pin out of the connecter and source another to put in it's place.

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