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  1. #1
    dpracing's Avatar
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    Okay Icontrol 260 guys with tunes, here's a fuel pressure question for you........

    How many of you actually checked it and what readings did you get? How did you correct it?

    Mine is low at about 52 psi. How would adding a FPR help if the factory is already a returnless style system. If you make it a return style with a regulator, how is the pump going to make more pressure than it is now? For example my pump is pushing as hard as it can against the fuel rail and making 52 psi.

    I was told more voltage to the pump would increase the pressure and that makes sense, they do it on boosted cars.

    Any suggestions? I guess I can tune my ski around my individual pressure no? It does hold steady, just doesn't peak at the factory 58 psi.


  2. #2
    Site Admin Green Hulk's Avatar
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    this is a very common problem with the newer skis. Fuel pressure is terrible inconsistent. The aftermarket tunes are based off of 60 psi static fuel pressure.

    What you do is install the Riva RRFPR and set it at 60 psi static fuel pressure
    http://www.4-tecperformance.com/inde...oducts_id=1306

    Lots of good information can be found in this thread
    http://www.greenhulk.net/forums/showthread.php?t=191532

  3. #3
    dpracing's Avatar
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    Quote Originally Posted by Green Hulk View Post
    this is a very common problem with the newer skis. Fuel pressure is terrible inconsistent. The aftermarket tunes are based off of 60 psi static fuel pressure.

    What you do is install the Riva RRFPR and set it at 60 psi static fuel pressure
    http://www.4-tecperformance.com/inde...oducts_id=1306

    Lots of good information can be found in this thread
    http://www.greenhulk.net/forums/showthread.php?t=191532
    Jerry,

    How will my pump produce more pressure with a regulator if it can't produce it now as a returnless? That's my main question. Thanks for your help.

  4. #4
    Site Admin Green Hulk's Avatar
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    The stock regulator is blocked off when you install the Riva kit. The return system is internal.

    You have full adjust ability with the Riva RRFPR. You can adjust fuel pressure up or down.



    Quote Originally Posted by dpracing View Post
    Quote Originally Posted by Green Hulk View Post
    this is a very common problem with the newer skis. Fuel pressure is terrible inconsistent. The aftermarket tunes are based off of 60 psi static fuel pressure.

    What you do is install the Riva RRFPR and set it at 60 psi static fuel pressure
    http://www.4-tecperformance.com/inde...oducts_id=1306

    Lots of good information can be found in this thread
    http://www.greenhulk.net/forums/showthread.php?t=191532
    Jerry,

    How will my pump produce more pressure with a regulator if it can't produce it now as a returnless? That's my main question. Thanks for your help.

  5. #5
    dpracing's Avatar
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    Quote Originally Posted by Green Hulk View Post
    The stock regulator is blocked off when you install the Riva kit. The return system is internal.

    You have full adjust ability with the Riva RRFPR. You can adjust fuel pressure up or down.





    Quote Originally Posted by dpracing View Post
    Quote Originally Posted by Green Hulk View Post
    this is a very common problem with the newer skis. Fuel pressure is terrible inconsistent. The aftermarket tunes are based off of 60 psi static fuel pressure.

    What you do is install the Riva RRFPR and set it at 60 psi static fuel pressure
    http://www.4-tecperformance.com/inde...oducts_id=1306

    Lots of good information can be found in this thread
    http://www.greenhulk.net/forums/showthread.php?t=191532
    Jerry,

    How will my pump produce more pressure with a regulator if it can't produce it now as a returnless? That's my main question. Thanks for your help.
    So the factory pump does bleed pressure off back to the tank? That's where the inconsistency is occurring?

  6. #6
    stuckmoto's Avatar
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    Quote Originally Posted by dpracing View Post
    Jerry,
    So the factory pump does bleed pressure off back to the tank? That's where the inconsistency is occurring?
    Correct! The stock regulator returns at the pump. It is no more than a ball on a spring clip. That is why it is so inconsistent. The stock pump is capable of making enough flow/PSI.

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  8. #7
    dpracing's Avatar
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    Quote Originally Posted by stuckmoto View Post
    Quote Originally Posted by dpracing View Post
    Jerry,
    So the factory pump does bleed pressure off back to the tank? That's where the inconsistency is occurring?
    Correct! The stock regulator returns at the pump. It is no more than a ball on a spring clip. That is why it is so inconsistent. The stock pump is capable of making enough flow/PSI.
    Makes perfect sense, thanks for clarifying!

  9. #8
    dpracing's Avatar
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    Is there a non rising rate regulator available? Can the Riva unit do this? I don't need a RRFPR on a basically stock ski do I?

  10. #9
    Site Admin Green Hulk's Avatar
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    Quote Originally Posted by dpracing View Post
    Is there a non rising rate regulator available? Can the Riva unit do this? I don't need a RRFPR on a basically stock ski do I?

    The Riva can be set up as static or rising rate
    You will want to set it up as static if you plan to tune the ski with V-Tech or other aftermarket ECU as all of the tunes are written based on 60 psi base pressure.

    If you plan to leave the ski stock then you don't need to worry with it.

  11. #10
    dpracing's Avatar
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    Quote Originally Posted by Green Hulk View Post
    Quote Originally Posted by dpracing View Post
    Is there a non rising rate regulator available? Can the Riva unit do this? I don't need a RRFPR on a basically stock ski do I?

    The Riva can be set up as static or rising rate
    You will want to set it up as static if you plan to tune the ski with V-Tech or other aftermarket ECU as all of the tunes are written based on 60 psi base pressure.

    If you plan to leave the ski stock then you don't need to worry with it.
    Well just with the mods I have now. So set up as static correct?

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