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Thread: Tips on install---AEM FPR

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    Registered User dawk's Avatar
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    Tips on install---AEM FPR

    About to install a few parts before I go FI. My car is currently not FI, but I am going to install a AEM adjustable fuel pressure regulator, walbro 255, and change the fuel filter with a fuel pressure gauge.

    Is there anything I should know before I install the FPR? Looks pretty straight forward. Unbolt and disconnect vacuum line, and replace (with new O ring). Is that it? Thanks

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    NSXPrime Platinum RYU's Avatar
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    Re: Tips on install---AEM FPR

    Are you using the factory fuel rail, the CT fuel rail assuming you're going CTSC, or are you mounting it remotely...say on the rear firewall?

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    Re: Tips on install---AEM FPR

    When I installed my AEM FPR, it didn't come with new copper washers for the fuel line attachment. Might want to grab some before the install.
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    Registered User dawk's Avatar
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    Re: Tips on install---AEM FPR

    Quote Originally Posted by blodi View Post
    When I installed my AEM FPR, it didn't come with new copper washers for the fuel line attachment. Might want to grab some before the install.
    Thanks. Do you know the part numbers?

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    Registered User dawk's Avatar
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    Re: Tips on install---AEM FPR

    Quote Originally Posted by RYU View Post
    Are you using the factory fuel rail, the CT fuel rail assuming you're going CTSC, or are you mounting it remotely...say on the rear firewall?
    I am going the use the factory fuel rail. The AEM should bolt direct to the OEM fuel line. Plan on going with AP-X turbo it.
    Last edited by dawk; 04-25-2012 at 08:47.

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    NSXPrime Gold blodi's Avatar
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    Re: Tips on install---AEM FPR

    Quote Originally Posted by dawk View Post
    Thanks. Do you know the part numbers?
    Just take the banjo bolt with you to a hardware store, you'll find the right size to go around it. .
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    Registered Vendor angus's Avatar
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    Re: Tips on install---AEM FPR

    You should be able to re-use the OEM aluminum crush washers, you will need to use the AEM adapter that fits the stock fuel line, it has an o-ring to seal it.

    Do not drop the bolts!
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    Registered User dawk's Avatar
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    Re: Tips on install---AEM FPR

    Quote Originally Posted by angus View Post
    You should be able to re-use the OEM aluminum crush washers, you will need to use the AEM adapter that fits the stock fuel line, it has an o-ring to seal it.

    Do not drop the bolts!
    Thanks! Is that included in the aem for kit? Have not looked in box yet.

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    Re: Tips on install---AEM FPR

    According to the Aem website it fits to the Factory rail.

    Interesting to see pics once it's fitted.

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    Registered Vendor angus's Avatar
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    Re: Tips on install---AEM FPR

    Quote Originally Posted by dawk View Post
    Thanks! Is that included in the aem for kit? Have not looked in box yet.
    It should be included.
    Vendor Page: AP-X Systems
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    Re: Tips on install---AEM FPR

    Quote Originally Posted by jaffaz32 View Post
    According to the Aem website it fits to the Factory rail.

    Interesting to see pics once it's fitted.
    The NSX uses the same footprint as many other Honda/Acura regs.
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    Re: Tips on install---AEM FPR

    Quote Originally Posted by angus View Post
    The NSX uses the same footprint as many other Honda/Acura regs.

    Aem also does Honda Fuel filters for stock replacement.

    They would fit also perhaps?

  13. #13

    Re: Tips on install---AEM FPR

    Why are you installing the AEM FPR. The stock FPR is 1:1 and proven reliable. Unless you need to bump up the pressure because you are running injectors that are too small the stock should suffice.
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    Charter Gold Honcho's Avatar
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    Re: Tips on install---AEM FPR

    Dawk is going turbo.
    1991 NSX Berlina Black / Ivory
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    Re: Tips on install---AEM FPR

    Quote Originally Posted by Honcho View Post
    Dawk is going turbo.
    Yeah so?
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    Registered User dawk's Avatar
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    Re: Tips on install---AEM FPR

    Just finished the install.

    Tips:

    Take off fuel rail to mount. A lot easier to tighten the bolts. Make sure to have a few rags for the fuel. Buy a new hose clamp for the fuel line. Took me 30 minutes on my first try.

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    Re: Tips on install---AEM FPR

    Quote Originally Posted by dawk View Post
    Just finished the install.

    Tips:

    Take off fuel rail to mount. A lot easier to tighten the bolts. Make sure to have a few rags for the fuel. Buy a new hose clamp for the fuel line. Took me 30 minutes on my first try.
    any pics?

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    Registered User dawk's Avatar
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    Re: Tips on install---AEM FPR

    Quote Originally Posted by RYU View Post
    any pics?


    Last edited by dawk; 06-13-2012 at 18:41.

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    Re: Tips on install---AEM FPR

    is there a port to install a fuel pressure gauge on that regulator?
    93' NSX T-76 Turbo 565whp
    92' VR4 10.9@131

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    Registered User dawk's Avatar
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    Re: Tips on install---AEM FPR

    Quote Originally Posted by adrenaline_nsx View Post
    is there a port to install a fuel pressure gauge on that regulator?
    I installed a fuel pressure gauge to the fuel filter. Easy to do.

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    Re: Tips on install---AEM FPR

    Quote Originally Posted by adrenaline_nsx View Post
    is there a port to install a fuel pressure gauge on that regulator?
    there is

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    As these are adustable how did you adjust it for the correct amount of pressure?

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    allen head screw on top and the lock nut. pretty easy. I one on my car
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    Quote Originally Posted by chudson1549 View Post
    allen head screw on top and the lock nut. pretty easy. I one on my car
    Thanks,

    but how do you know how much to turn the lock nut and how much pressure you have or even how much you even want to achieve?

    Lets say you have a fuel pressure gauge on the filter, does will this show how much pressure the FPR is set to?
    Last edited by jaffaz32; 08-09-2013 at 06:33.

  25. #25
    Quote Originally Posted by jaffaz32 View Post
    Thanks,

    but how do you know how much to turn the lock nut and how much pressure you have or even how much you even want to achieve?

    Lets say you have a fuel pressure gauge on the filter, does will this show how much pressure the FPR is set to?
    Yes the gauge on the filter will show the pressure the FPR is set to. The amount you want is based on your fuel system, fuel (horsepower) demands, boost levels, and other factors. Most people don't need an adjustable regulator unless they are trying to get more fuel without upgrading to larger injectors. Unless you want 500-550+ A stock regulator would work fine with properly sized injectors.

    I've designed a web app to help people figure out what fuel pressure, injectors, and fuel pump will meet their goals.

    http://webpages.charter.net/hybrdthr...mp_web_app.htm

    - - - Updated - - -

    Here is another thread with some good fuel pressure information:

    http://www.nsxprime.com/forum/showthread.php/159775-school-me-on-the-AEM-1-1-FPR
    Last edited by E-Nough Logic; 08-09-2013 at 19:57.
    NSX Prime Vendor Listing: E-Nough Logic
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    1992 GPW GTX3076r powered 446whp 9psi.
    E-Nough Logic AEM EMS to iOS Digital Display

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