I have a 96 GT with a 2000 PI motor. I swapped it out about a year ago. Recently when i roll on the throttle it will start missing a little, around 4500 RPM. Or if i drop the clutch from a stop it misses a little sooner. I figured it was either electrical or fuel. I replaced my coils which weren't even a year old along with my wires, plugs, fuel filter and im still having the problem. The car has an aftermarket fuel pump due to a previous nitrous system. I hooked up a fuel pressure gauge and taped it to my windshield and drove it to see what my fuel pressure was doing. At key on its inbetween 25-30 psi. and if i let it sit with the key on for about 5 minutes sometimes the pressure will drop to around 20 psi. When motor is running its around 28-30 psi. I looked up what it should be at, and it says at key on i should be 35-45 psi. When running it says i should be at 30-40psi. My question is could the low psi. be the reason its starting to miss up top? Thanks any input would be nice
PS. Stock injectors and stock regulator
PS. Stock injectors and stock regulator