djm_e22

iTrader: (2)

Ok when I turn the key on it goes to around 40psi, but when I actually start the car the fuel pressure at idle is 50-51psi. I simulated WOT by pulling the vacuum line and it is 54-55psi.

So with that being said you would think I would be running rich with that high of fuel pressure. Nope at idle in open loop I am jumping around 15-16:1 afr. Closed loop is another issue. Maybe resolving this will magically fix my closed loop problem.

Also when I slam on the gas pedal it hesitates for a second(18-20:1 AFR) then all of a sudden it takes off(12.5:1 AFR)

Could something be clogging my fuel rail causing high fuel pressure, a lean idle, and hesitation when I try to accelerate?

If it is a bad fuel pressure regulator I definantly shouldn't run lean. Correct?

RamAir95TA

iTrader: (2)

Stock FPR or aftermarket? What kind of fuel pump? Return line unrestricted?

djm_e22

iTrader: (2)

Stock FPR, walbro 255 I think. It was the version you get from racetronix. I also have their fuel pump voltage booster. Also if the stock return line is unrestricted then mine is unrestricted. By the way nice time with your car.

Lonnies Performance

iTrader: (16)

You pump booster should not be activated at idle.... check voltage at pump.
This will screw up your pressure.

You should only raise voltage at full throttle.