Fuel Pressure Regulator

[jkotsa]

Hi all just resently purchased a apexi safc2 and was also given a fuel pressure regulator? Want to know will there be any difference if i install this fuel pressure regulator as well? Doesent the engine already have one? Will it make a difference. ps car is r33 s2regrardsJim

[R31Nismoid]

No difference, no performance gain

FYI, with correct injectors you can make over 350rwkw, factory fuel reg, hell, even over 400rwkw.

Regs IMO are only good for the person chasing an extra 20-30rwkw from factory items with a mild upgrade turbo

[DECIM8]

Will test this theory, im pretty sure its been tested by him before but let yall no

[GeeTR]

I've always wondered the results, of a stock/Nismo adjustable FPR, bench tested (literally) against an aftermarket, larger diaphragm'ed unit like a SX, Magnaflow, Malpassi, Sard etc. I wonder which one would control rail pressure VS inlet pressure the quickest... and if this response time even plays on real world chamber AFR's.