I have a gsr turbo here w/ stock internals @ 7psi. Today i got enough money to blow and correct my fuel issues, which is i simply dont have enough, my car leans out here and there. I plan on replacing: Fuel Rail, FPR, Injectors (Already have bought rc 440's), and cam gears. I just bought an STR bronze fuel rail online, and does anyone know if the AEM FPR fits it? Or whats a better or just as good alternative to the AEM FPR on an STR Rail?


Modified by DvD3 at 11:28 PM 11/20/2005


Modified by DvD3 at 11:44 PM 11/20/2005

 

did u upgrade the fuel pump yet?

 

nah i didnt think id need to unless i hit like 350+whp

 

can someone answer my question? need to order an fpr asap

 

Go with a fuel rail, stock fpr, 550 injectors and a walbro 255hp hardwired to the battery or alternator with a inline relay.

 

why stock fpr?

 

Because the stock 38-40 psi is enough pressure.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Adi Radoncic &raquo;</TD></TR><TR><TD CLASS="quote">Because the stock 38-40 psi is enough pressure.</TD></TR></TABLE>

when he installs that fuel pump he is going to need a way to back down fuel pressure

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 2k.civic.si &raquo;</TD></TR><TR><TD CLASS="quote">

when he installs that fuel pump he is going to need a way to back down fuel pressure</TD></TR></TABLE>

The fpr controls the pressure, the pump has nothing to do with that.

 

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

The fpr controls the pressure, the pump has nothing to do with that.</TD></TR></TABLE>

LOL...ok u keep thinking that...heres a question...what creates the pressure...

 

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

 

I think you got confused, the voltage drives the pump so it creates pressure, the fuel pressure regulator controlls the pressure to 38-40 (stock regulator) I don't know why you think he needs to lower the pressure when this is a boosted application and he is going to have a tuning device on the car...

The article you linked to only talks about if your doing fp adjustments mechanicly to alow more fuel to be drained back into the tank in the midrange.
If he has the car tuned this isn't a problem.

 

because the new pump pushes a higher volume at higher pressure....did u even bother to look at the endyn link i posted...they do that for just that reason so they can run aftermarket pumps at stock pressure

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 2k.civic.si &raquo;</TD></TR><TR><TD CLASS="quote">because the new pump pushes a higher volume at higher pressure....did u even bother to look at the endyn link i posted...they do that for just that reason so they can run aftermarket pumps at stock pressure</TD></TR></TABLE>

First of all, quoting Endyn is no way to earn respect or merit. Second of all, Adi Radoncic is right. You don't ever need to adjust your fuel pressure, unless you have a problem with injector pulsing (i.e. you are running large injectors).

People who buy adjustable FPRs are usually just uninformed retards who don't understand how fuel delivery works. A high volume pump in conjunctiton with a stock FPR works perfectly.

 

i know when i stuck my walbro255hp in i had to back the pressure down...say what you will but i know this for fact...its on my own car...lol

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 2k.civic.si &raquo;</TD></TR><TR><TD CLASS="quote">i know when i stuck my walbro255hp in i had to back the pressure down...say what you will but i know this for fact...its on my own car...lol</TD></TR></TABLE>

Well enjoy your broken setup then . I've installed 255's on all my cars and it's never altered my fuel pressure. And even if it somehow did, that's a two-second correction that is made with the tuning software - not an expensive, unecessary aftermarket regulator.

 

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

Well enjoy your broken setup then . I've installed 255's on all my cars and it's never altered my fuel pressure. And even if it somehow did, that's a two-second correction that is made with the tuning software - not an expensive, unecessary aftermarket regulator.</TD></TR></TABLE>

guess you need to go lookup what the walbro255hp is
and u think i dont know that? i tune cars weekly bro =P

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 2k.civic.si &raquo;</TD></TR><TR><TD CLASS="quote">
guess you need to go lookup what the walbro255hp is</TD></TR></TABLE>

Why? I used to have one on my FMU'd JRSC setup. Actually, maybe we should have determined whether or not this guy is running an FMU before we started giving suggestions... That's kind of important. I guess I just assume that nobody uses an FMU anymore and will therefore have the low pressure 255.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote">
and u think i dont know that? i tune cars weekly bro =P</TD></TR></TABLE>

That's why I'm wondering why you'd advise purchasing a regulator?

 

here ill quote walbro for ya..."The Walbro high output in-tank electric fuel pumps are available in flow ratings of 255 liters of fuel per hour. These particular pumps flow significantly more fuel at higher pressure. "

lets focus on these few words "at higher pressure"

so if the pumps puts out higher pressure oviously you would have to back down the fpr to keep the injectors from having to work harder and get hotter and reduce their life...but im sure you already thought of that =P

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 2k.civic.si &raquo;</TD></TR><TR><TD CLASS="quote">here ill quote walbro for ya..."The Walbro high output in-tank electric fuel pumps are available in flow ratings of 255 liters of fuel per hour. These particular pumps flow significantly more fuel at higher pressure. "

lets focus on these few words "at higher pressure"

so if the pumps puts out higher pressure oviously you would have to back down the fpr to keep the injectors from having to work harder and get hotter and reduce their life...but im sure you already thought of that =P</TD></TR></TABLE>

Like I said, we need to figure out if this guy is running an FMU. FMU setups use the 255hp, non-FMU setups use the standard 255.

 

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

Like I said, we need to figure out if this guy is running an FMU. FMU setups use the 255hp, non-FMU setups use the standard 255.</TD></TR></TABLE>

wrong again...the regular 255 will also raise pressure
https://honda-tech.com/zerothread?id=1317568

true using search for once...there is lots of people who had their fuel pressure go up after installing a standard 255....go install a few more =P

to quote mtber
"Normally the fuel pressure will rise over what it was on the stock fuel pump....
What fuel regulator are you using ?
Something doesnt sound right. "

 

or how about we quote hybrid_vtec
"I am am having this delima right now! My Pressure is 60psi at idle! Walboro 255lph, and I have an adjustable FPR and it wont go down any more! Am running OBD-1 H22 injectors as well! "

 

another example
https://honda-tech.com/zerothread?id=993172

to quote tech 43
"you need a fpr with a big return orifice (aem, aeromotive, sx, etc) the b&m (stock) cannot return enough fuel, and this is causing too much pressure at the rail. my opinion? buy a aem regulator.
hint for everyone else running naturally aspirated: stop buying 255 lph pumps, its way overkill. the 190lph will support more horsepower than you will ever, ever be able to make. "

and how many have u installed? lol

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 2k.civic.si &raquo;</TD></TR><TR><TD CLASS="quote">here ill quote walbro for ya..."The Walbro high output in-tank electric fuel pumps are available in flow ratings of 255 liters of fuel per hour. These particular pumps flow significantly more fuel at higher pressure. "

lets focus on these few words "at higher pressure"

so if the pumps puts out higher pressure oviously you would have to back down the fpr to keep the injectors from having to work harder and get hotter and reduce their life...but im sure you already thought of that =P</TD></TR></TABLE>

Yes the pump may flow more and provide more pressure in the system but the FPR controls the pressure down to 38-40psi stock.... Yes Pump is making an x amount of pressure but the fpr drops it to whatever its set to.....

I've installed walbros on a few cars and I have never ever seen the pressure jump from just the pump switch alone.

 

the stock fpr cant handle aftermarket fuel pumps period...

to quote tech 43
"you need a fpr with a big return orifice (aem, aeromotive, sx, etc) the b&m (stock) cannot return enough fuel, and this is causing too much pressure at the rail. my opinion? buy a aem regulator.
hint for everyone else running naturally aspirated: stop buying 255 lph pumps, its way overkill. the 190lph will support more horsepower than you will ever, ever be able to make. "

this is why people started doing this
http://www.theoldone.com/articles/regulator/

"The orifice (or valve) inside the Honda regulators is so small in diameter that it serves as a restriction to fuel returning to the tank, so no amount of adjustment will drop the pressure."

so let me see...believe your bs or believe what ive seen with my own eyes and what other builders have also said...