92civy

hey guys i am turboing my (obd1) d15b vtec and i am going to install a standard 255 lph fuel pump, 450 cc injectors. i am also installing a adjustable fuel pressure regulator. i am looking for 200 whp on a t3 .42/.48 turbo. i plan to run 9-10 psi.

what should i run this at and what else should i change (fuel wise) to get this whp?

EK k kay

Leave it stock. You don't need the fpr.

mike93eh2

35-40psi..

but you do know you need some sort of engine management to tune it with right?

92civy

yes i am street tuning it with crome or uberdata, stock pressure is 42 right?

CivicVX94

let the tuner figure it out.
and if it's you who's doing the tuning and you don't know what fuel pressure to run, no offense, don't tune your car.
I know i would never tune mine b/c i'd expletive it up bad.

to the people who said stock-i wouldn't say it's the stock fuel pressure, think about it. you have a fuel pump pumping more fuel than stock into injectors injecting more fuel than stock into your motor...
and fyi i get much better gas milage w/ my fully tuned turbo ls than i did w/ my n/a ls and my original d15z1 (vx engine) so ya...unless your driving everywhere at wot or your setup isn't tuned well, it doesn't really take more fuel..
but i'm prolly wrong..idk **** about tuning
goodluck

edit
also i have a walboro 255, high flow fuel rail, 440cc injectors, and an adjustable fuel pressure regulator (can't remember brands of ****) and i think my fuel pressure is at 37psi