fuel pressure regulator

I'd like to ask if one might want one on a stock motor. Any advantages?

i dont buy it. the puter can compensate for FP changes (up to 25 percent either way, then it tosses a code). with more pressure, you will shorten the duty cycle of the injectors. once the puter trims the fuel back (it is pretty adaptive and will learn how to compensate for what you did), the result is not great (only if you were outrunning your injectors, requiring say a 110% duty cycle to maintain the a/f ratio with stock pressure. bump pressure up so you can run at like 95-100% duty cycle).

im not really sure about WOT. some say the higher pressure will help at WOT (o2's not used), but others have said that the puter can even trim FP from WOT runs - i would leave that one up to the puter experts. if it does trim the FP at WOT, i am not sure why one would really need to bump the pressure on a stock-ish motor.

my two cents worth.

the only reason i put on on my car is beacuse i have bigger plans for the car.... i figured that i'm gonna need one anyway, plus it was a good deal on it

with bigger injectors,i know it helps because that stock reg on the fuel rail can only pump so much gas..but if you do decide to get one, make sure you have a gauge so you can watch the pressure..
good luck