quick fuel pressure question... help

[whyteboi]

i dont wanna sound like a newb but i cant really find a definitive answer on this.

my walbro pump has killed my stock fuel pressure regulator, im currently waiting for a nismo adj fpr now, i have a fuel press gauge inline (after the filter, before the rail) question is, what pressure should i set it to??? its na currently with no major power adders (just full exhaust and such)

ive searched my fsm, but ive seen also where when the vac drops the pressure is supposed to decrease, correct me if im wrong but the nismo fpr set and stays at a set pressure, so where should i set it to keep it from too rich or too lean??? thx to anyone

[whyteboi]

nobody???

[nismoka24e91]

i think stock ka runs 35psi. but you might be able to do 40... i dont know. i could look in my book. sense you dont have serious mods i would probably go with stock pressure unless you get some aftermarket injectors and rail.

[gumby74]

I believe it should be set to 43psi without vacuum, 36psi with vacuum. I may be over by one psi though.