i hav ea 94 lt1 with the mods in my sig. i was having problems with my fuel pressure and bought a new pump for it but have not been able to put it in yet. i was running 28 psi fuel pressure at idle and revving dropped the pressure in my driveway. but then the car will seem fine through normal driving and getting on it in mid rpms. i have no more low end or high end hp or torque. but, while i was driving it, i noticed my gas mileage is worse than it used to be. i only got like 160 miles to a tank. i wasn't beatin on the car either. would the gas mileage get worse like that? i thought it would be better because th efuel pressure was lower? any help is appreciated.

 

no one can help?

 

Your PCM is going to try and compensate for low fuel pressure based on the O2 readings. Fix your low fuel pressure issue first (have to replaced your fuel filter?) and then check your gas mileage. A ported MAF may also be part of the problem.