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  1. #1

    fuel pressure regulator

    Anybody have a pic of the fuel pressure regulator? What would this do if installed on a GTX SC with mods, still using the stock fuel pump? I think some people here have this installed in their ski`s...PR...

    I am aware that there are different fuel pressures between the GTX SC and the RXP/RXT What are those values?


  2. #2
    Moderator two2curupt's Avatar
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    I don't have a pic of it....Look on the top of your gas tank...it is silver and about 2.5 inches...cylinder shaped and made of metal...If I remember corectly...Mark changed mine about 2 years ago...so it has been a while..

  3. #3
    Red Devil's Avatar
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    Pale Rider,

    This is something that should be installed when modding your GTX S/C. Mark will send this to you when you order the Stage I kit. It is very simple to replace. The regular non intercooled GTX S/C models comes with the one regulated to 44psi. All the other intercooled models come with the one regulated to 58 psi. Once you start modding, especially with the intercooler and new ECU, you will definatley want to swap it out for the 58 psi one. I even installed a fuel pressure guage between the fuel lines just to verify, and sure enough, it is pegged at 58 psi everytime.

  4. #4
    Thanks for the info! another question:
    What is the empty spot in the fuel rail for?
    Most fuel pressure regulators for EFI on cars have been installed in the fuel rails and hooked up to vacuum, this is the first time I`m seeing something mounted to the top of the fuel cell. There looks like there is a metal strap holding it in place, I remember that swiveling a little bit when I took out the air box to mod...PR...

    Also does this work with the stock fuel pump???

  5. #5
    Red Devil's Avatar
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    Quote Originally Posted by Pale Rider
    Thanks for the info! another question:
    What is the empty spot in the fuel rail for?
    Most fuel pressure regulators for EFI on cars have been installed in the fuel rails and hooked up to vacuum, this is the first time I`m seeing something mounted to the top of the fuel cell. There looks like there is a metal strap holding it in place, I remember that swiveling a little bit when I took out the air box to mod...PR...

    Also does this work with the stock fuel pump???
    Yup, that strap does swivel a bit, that is normal. Just remove the metal strap holding the Fuel Pressure Regulator in place. Gently bend in the bottom two sides and it pops right out. Oh, and yes, it works fine with the stock fuel pump.

  6. #6
    Ok, so far the plans in the works are:
    RXP ECU
    V imp w/RR shaft kit
    pump mods by skat,

    are you saying it is necessary to install the RXP/RXT regulator???...PR...

    If so where do you buy that?

  7. #7
    Red Devil's Avatar
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    Quote Originally Posted by Pale Rider
    Ok, so far the plans in the works are:
    RXP ECU
    V imp w/RR shaft kit
    pump mods by skat,

    are you saying it is necessary to install the RXP/RXT regulator???...PR...

    If so where do you buy that?
    Get with Mark @ Race Tech for the price of the regulator. I believe they are under $100 and he probably has them on hand. I think you can get by without using the 58 psi regulator just using the RXP ECU for now. There is a guy down in FL where PPG did his entire setup on his 03 GTX (RR ECU, RR Intercooler, etc.) without even changing the regulator and he is running fine. Glen didn't feel it was necessary, but as with all expert tuners, each has his own opinions. I myself went with Mark's. If you plan on adding the intercooler in the future you may as well go ahead and purchase it anyway. See what Mark's take on it is though.

  8. #8
    Red, you the man... How can I contact Mark? phone #? e-mail?...Thanks PR...

  9. #9
    Site Admin Green Hulk's Avatar
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  10. #10
    Thanks Jerry, where is that?...PR...

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