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Old 06-10-2002, 10:39 PM   #1
Eric SS
Sooby Guru
 
Member#: 1914
Join Date: Jul 2000
Chapter/Region: SWIC
Location: 2013 335i, 2011 G37 coupe
Vehicle:
2000 2.5RS w/ EJ22T
swap and N20. gone. : (

Exclamation Update on my FPR stuff. some interesting info inside.

OK, so Today at work I decided to try something crazy so I hollowed out my stock FPR because I couldn;t figure out what to put there in its place and I couldn;t get the SVX regulator today.

So, I did that and put it back on the rail. Now, I am effectivly only running the Cartech RRFPR. After some adjustment of the top spring I got it to idle at 33psi (where I want it.) Now with the side screw (the fuel psi/# boost screw) all the way out it raised to about 85psi at 5# boost. More than I wanted.

I couldn;t get it any lower than that and then I remembered that the kit came with some sort of plastic piece you are supposed to put in the vaccum tube to only allow a certain amount of vaccum to the RRFPR. At least I think I remember that because I couldn;t find it. anyone know for sure?

So, since I couldn;t find that, I jerry-rigged how much boost and vaccum can go through that line by putting a tie strap around the vaccum hose and almost clamping it shut.

Now, after some playing with different settings of the tie strap (hehe) I got it to where it goes up to about 48-50psi under normal acceleration and up to 70psi at 5#'s of boost. If I had that little dohickey that came with the kit I;m sure it would have been easier but, there you have it. With some tweaking, you can make the Cartech RRFPR a stand alone piece. I wonder if Cartech offers any other internal springs that would make tuning easier so I don;t have to use the tiestrap. Anyone know if they do or don;t offer other springs? A spring with a little more tention would be perfect!

Eric
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