Possible to adjust fuel pressure with a stock fuel pressure regulator?

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Old Jul 10, 2005 | 11:59 PM
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Default Possible to adjust fuel pressure with a stock fuel pressure regulator?

Not to adjust it through the stock fpr but is there any other way?
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Old Jul 11, 2005 | 01:45 AM
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Default Re: Possible to adjust fuel pressure with a stock fuel pressure regulator? (Bay_707)

Woudlnt really know any other way then the FPR? Get a B&M fpr if you have to.
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Old Jul 11, 2005 | 10:15 AM
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i live in california fpr's are illegal...
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Old Jul 11, 2005 | 10:32 AM
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Default Re: (Bay_707)

Do you want to just lower the pressure? You can drill a hole in your stock FPR. I did it to mine after I got a Walbro 255lph HP fuel pump before I bought my AEM. I still have it if you want it. I'll give it to you for free since I don't need it. Just pay me $5 for shipping. It's from a '99 B16A, btw.
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Old Jul 11, 2005 | 10:53 AM
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Default Re: (USE2B16A)

Or you can install the fpr somewhere down further on the return line so its out of site..
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Old Jul 11, 2005 | 08:32 PM
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anyone got a writeup or something on a hidden fpr?
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Old Jul 11, 2005 | 08:32 PM
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Default Re: (USE2B16A)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by USE2B16A &raquo;</TD></TR><TR><TD CLASS="quote">Do you want to just lower the pressure? You can drill a hole in your stock FPR. I did it to mine after I got a Walbro 255lph HP fuel pump before I bought my AEM. I still have it if you want it. I'll give it to you for free since I don't need it. Just pay me $5 for shipping. It's from a '99 B16A, btw.</TD></TR></TABLE>

thanks for the offer but i think ill try to go with a hidden fpr
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Old Jul 11, 2005 | 10:13 PM
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Default Re: (Bay_707)

**** it mount it up top so its easy to adjust and if the CHP asks u if your engines been mod'd tell him nope its stock and the original motor. thats what worx for my buddies in cali. but maybe they just get nice cops
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Old Jul 12, 2005 | 12:17 AM
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is there an electronically adjusted fpr?
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Old Jul 12, 2005 | 12:22 AM
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guess im stuck with drilling a hole in the stock one
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Old Jul 12, 2005 | 05:50 AM
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Default Re: (Bay_707)

I dont think there is a write up of installing one hidden.. Just follow the return line back to the tank and rig something up back there..
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Old Jul 12, 2005 | 06:41 AM
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Default Re: (Bay_707)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Bay_707 &raquo;</TD></TR><TR><TD CLASS="quote">i live in california fpr's are illegal...</TD></TR></TABLE>

Wow you can't even adjust your fuel pressure? haha I feel really bad for you Cali guys....I used to want to drive there and visit, but I am not to sure anymore
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Old Jul 12, 2005 | 07:29 AM
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Default Re: (Dunc)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Dunc &raquo;</TD></TR><TR><TD CLASS="quote">

Wow you can't even adjust your fuel pressure? haha I feel really bad for you Cali guys....I used to want to drive there and visit, but I am not to sure anymore </TD></TR></TABLE>

Well you're out of state you can mod the crap out of your car as long as you follow your state's laws. That does suck though. What's the ultimate goal here for the FPR, maybe we can find a different solution
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Old Jul 12, 2005 | 08:45 PM
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Default Re: (adseguy)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by adseguy &raquo;</TD></TR><TR><TD CLASS="quote">

Well you're out of state you can mod the crap out of your car as long as you follow your state's laws. That does suck though. What's the ultimate goal here for the FPR, maybe we can find a different solution</TD></TR></TABLE>

Thanks for trying to help me out here i appreciate it. The goal is to lower my fuel pressure so i am not running as rich. I am going to be getting tuned but i want to do it with a stock fpr or visually pass smog with the setup and emissions wise. So a hidden aem fpr would do the job, i just dont know where to start
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Old Jul 12, 2005 | 09:13 PM
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Default Re: (Bay_707)

Lowering is easy. Just drill a tiny tiny hole like 1/16" through the diaphram of your stock FPR. If that doesnt lower it enough drill another one.

Since you have to keep the stock FPR for the visual you can't replace it with an adjustable one. And adding a 2nd FPR to the system wont allow you to adjust it any lower than the pressure set by the stock FPR - Unless you drill a big *** hole through it.

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Old Jul 14, 2005 | 01:16 AM
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doesnt drilling it release pressure? how would you be able to have another fpr raise pressure if the other one keeps lowering it
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Old Jul 14, 2005 | 03:40 AM
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Default Re: (Bay_707)

you can also chip your ecu and change the fuel maps around if it's running too rich.
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Old Jul 14, 2005 | 04:21 AM
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Default Re: Possible to adjust fuel pressure with a stock fuel pressure regulator? (Bay_707)

if you are trying to raise the fuel pressure, put it in a vice, with a socket over the nipple and start to squash it. we used to do this on the buicks till adjustables became available. by squashing it, basically you are tightening the spring.
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Old Jul 14, 2005 | 06:37 AM
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Default Re: (Bay_707)

This is where we got the idea to drill the stock fpr:

http://www.theoldone.com/articles/regulator/

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Old Jul 15, 2005 | 11:46 AM
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Default Re: (michaelOlson)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by michaelOlson &raquo;</TD></TR><TR><TD CLASS="quote">you can also chip your ecu and change the fuel maps around if it's running too rich.</TD></TR></TABLE>

but you cant lower the fuel pressure by using hondata right?
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Old Jul 15, 2005 | 11:54 AM
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Default Re: (Bay_707)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Bay_707 &raquo;</TD></TR><TR><TD CLASS="quote">

but you cant lower the fuel pressure by using hondata right?</TD></TR></TABLE>

You cant lower fuel pressure but you can change the pulse width of the injectors to change air/fuel.. I always wanted to mess with something like an electronic fuel pressure regulator that the ecu could control..
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Old Jul 15, 2005 | 11:58 AM
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Default Re: (tgreaves)

I did that a long time ago to lower fuel pressure.One side affect is you have to crank your engine alot longer to build up fuel pressure.Its a pain in the *** sometimes the car wont start unless you crank it for awhile.Youll be happier with an adjustable FPR.
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Old Jul 15, 2005 | 12:00 PM
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Default Re: (Cloner)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Cloner &raquo;</TD></TR><TR><TD CLASS="quote">I did that a long time ago to lower fuel pressure.One side affect is you have to crank your engine alot longer to build up fuel pressure.Its a pain in the *** sometimes the car wont start unless you crank it for awhile.Youll be happier with an adjustable FPR.</TD></TR></TABLE>

I could see this since fuel system wont hold pressure when there is a hole in the fpr.. Could be fixed by putting the fuel pump on a toggle switch so that it runs steady before you start cranking the car..
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Old Jul 16, 2005 | 03:52 PM
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Default Re: (tgreaves)

You dont have to go through all that just crank the ignition key to the on postion then off then on to build fuel pressure but it still sucks having to do this.
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Old Jul 18, 2005 | 12:06 AM
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sounds like a pain in the ***
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