yellowbuffalo

whats stock fuel pressure for a Civic Si ? year 2000

shermanyang

iTrader: (1)

you'll be good with the pressure @35 - 40

yellowbuffalo

u sure

shermanyang

iTrader: (1)

Possitive!! if you don't trust me...dial it in to 38 and take your car around the block...it'll be fine. if you turn it up you might want to reprogram your ecu(take the ecu and backup fuses out and let it stand for 1 - 2 min, put back the fuses and start the car for 30 sec without stepping on the gas pedal to let the ecu recalibrate the fuel/air mapping, turn off the car for 15 sec and then turn it back on and drive it around flooring the gas pedal 2-3 times.) it's always good to do this to get the best fuel/air mapping.