Check valve in line with the FPR?
09-04-2004, 04:25 PM
#1
1.5 BAR
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Join Date: Dec 2002
Posts: 716
Check valve in line with the FPR?
I've have a few people tell that you should get an aftermarket FPR if you are using Uberdata. They say that the stock press. reg. won't live very long if it is exposed to boost on a regular basis (12 psi) Anybody know if putting a check valve in with it is a good idea, bad idea? I was going to try it, but not if someone says it's a bad idea...
09-04-2004, 07:18 PM
#3
1.5 BAR
Join Date: Feb 2004
Posts: 1,039
Re:Check valve in line with the FPR?
Originally Posted by Zeusfire69
I've have a few people tell that you should get an aftermarket FPR if you are using Uberdata. They say that the stock press. reg. won't live very long if it is exposed to boost on a regular basis (12 psi) Anybody know if putting a check valve in with it is a good idea, bad idea? I was going to try it, but not if someone says it's a bad idea...
Boost will not hurt your stock fpr but you will need to upgrade to an adjustable one (like the el cheapo B&M) if you put in dsm injectors or injectors that need a different fuel pressure than the stock honda injectors. Or really its not needed but a good thing to have
09-04-2004, 10:01 PM
#5
1.5 BAR
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Join Date: Dec 2002
Posts: 716
Re:Check valve in line with the FPR?
Thank you for the quick answer! That tells me exactly what I needed to know...I have a walbro 255 and I NEVER go lean at all, I'm not tuned yet so I really am rich all the time...so far that is... 
09-14-2004, 03:47 PM
#6
0.5 BAR
Join Date: Oct 2003
Posts: 71
Re:Check valve in line with the FPR?
Do not run a 255lph intank pump with a stock FPR, it simply cant return enough fuel for the increased flow the pumps throwing at it. This creates a bottle neck and causes a pressure increase in the rail.
I had the same problem in my car and couldnt turn the fuel pressure at idle below 50psi. I decided to do it the right way, and do a custom setup (now with a GE fuel rail) with an AEM 1:1 fuel regulator so as to not have problems with fuel supply to the 740's and mid-450hp motor im running.
Heres a pic of it
Its an easy mod... just drill the end of your fuel rail, tap it, get some AN line/fittings, tap the hole thats left from the stock FPR to 1/8" NPT and plug it, and replace the stock fuel return hose and its good to go
Hope that gives some insight!
I had the same problem in my car and couldnt turn the fuel pressure at idle below 50psi. I decided to do it the right way, and do a custom setup (now with a GE fuel rail) with an AEM 1:1 fuel regulator so as to not have problems with fuel supply to the 740's and mid-450hp motor im running.
Heres a pic of it
Its an easy mod... just drill the end of your fuel rail, tap it, get some AN line/fittings, tap the hole thats left from the stock FPR to 1/8" NPT and plug it, and replace the stock fuel return hose and its good to go
Hope that gives some insight!
09-14-2004, 04:34 PM
#7
3.0 BAR
Join Date: Jan 2003
Posts: 4,438
Re:Check valve in line with the FPR?
Do not run a 255lph intank pump with a stock FPR, it simply cant return enough fuel for the increased flow the pumps throwing at it. This creates a bottle neck and causes a pressure increase in the rail.
I had the same problem in my car and couldnt turn the fuel pressure at idle below 50psi. I decided to do it the right way, and do a custom setup (now with a GE fuel rail) with an AEM 1:1 fuel regulator so as to not have problems with fuel supply to the 740's and mid-450hp motor im running.
I had the same problem in my car and couldnt turn the fuel pressure at idle below 50psi. I decided to do it the right way, and do a custom setup (now with a GE fuel rail) with an AEM 1:1 fuel regulator so as to not have problems with fuel supply to the 740's and mid-450hp motor im running.
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