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Thread: Fuel Pressure PSI

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    Basic Member Andrew Kulikowski's Avatar

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    Fuel Pressure PSI

    Does any one have a straight answer to what fuel psi to run with the VP44?

    I just installed a new lift pump and it's set at 22b. When truck is off 19 at idle and it drops as low as 7 at WOT.

    As far as I know the truck is stock besides for a edge juice and a raptor 4G 100GPH lift pump.

    Should I turn it down or is 7 psi too low at WOT. Could this be that there are bigger then stock in the truck?


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    DDP's Avatar

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    Re: Fuel Pressure PSI

    Quote Originally Posted by Andrew Kulikowski View Post
    Does any one have a straight answer to what fuel psi to run with the VP44?

    I just installed a new lift pump and it's set at 22b. When truck is off 19 at idle and it drops as low as 7 at WOT.

    As far as I know the truck is stock besides for a edge juice and a raptor 4G 100GPH lift pump.

    Should I turn it down or is 7 psi too low at WOT. Could this be that there are bigger then stock in the truck?

    14-15PSI is normal

    Shouldnt go below 10PSI

    If it's dropping past 10PSI then more then likely you have some restrictions. Whether it be in the lines, failing pump, clogged filters. Could be a few things.

    A fass or airdog system should help you get the psi where it needs to be.

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