Fpr's

[handyandy]

hi guys, i tried a search. just a quick question....

is there an fpr that will be easier to fit ( or any benifits ) to the rb25det?

sard, malpassi.......etc

[rob82]

hi guys, i tried a search. just a quick question....

is there an fpr that will be easier to fit ( or any benifits ) to the rb25det?

sard, malpassi.......etc

Malpassi's are good for paper weights and are a good band aid fix for leaking injectors. Sards are very good, but the standard FPR is just as good(just doesn't have any adjustment). Why you need a FPR?

[PlasticStan]

If you want to fit an adjustable fpr, then the Nismo adjustable fpr (Part No. is 22670-RR580) is a straight swap for the standard RB25DET fpr.

Edited April 8, 2006 by PlasticStan

[handyandy]

rob... hopefully getting bigger turbo soon and i'm under the impression that i can use a fpr to get a few extra kw's. i have 200rwkw now with pfc standard turbo 10 psi.

Can i max injectors and afm and get about 230rwkw with fpr and turbo?

will be getting z32 afm and injectors ( i cant afford them yet )

Thanks for the info Plasticstan

Edited April 8, 2006 by handyandy

[R31Nismoid]

the standard FPR is just as good(just doesn't have any adjustment). Why you need a FPR?

Agreed. No need to upgrade at all

Use the stock item handyandy. I made 360rwkw using the stock FPR and it holds everything fine

cheers.

[Steve]

Nismo is definately the way to go if you are after bolt on simplicity, and it works well.

Be careful stretching stock injectors, I have seen so many RB25s go bang because they push the fuel system to the limits - its a shame because the RB25 can handle decent power if you just do things right and dont cut corners.

Another use for fpr (other than stretching the stock injectors) is to dial up the correct base pressure for aftermarket injectors. Sard, Nismo, HKS etc all rate their injectors at a base pressure (at idle) of 3.0kg, instead of the stock 2.55kg. The sard 550cc injectors, for example, are only rated at 520cc with base fuel pressure at 2.55kg (this is from the AP engineering site)

I asked a japanese performance mechanic to check my car to see if I was missing anyting - internally stock rb25 with 320rwkw. He suggested I should fit a fpr to bring base fuel pressure up to 3kg (sard injectors) - It was explained to me by him that using 3kg was 'best' for idle, fuel correction, accel enrichment etc when using power fc.

[handyandy]

thanks guys........ so looks like i'll be saving to get nismo injectors and a z32 afm.

don't want to risk engine.

thanks again fellas