95GT Problems, HELP!!!

[bigblockcoupe]

the first thing i would do is pull the plugs out to find out if it's running rich/lean or burning correctly if your plugs are heavily sooty black you are running way rich but if they are white you are running lean either condition will make the car run like crap as far as removing the hose from the pressure regulator it will make your fuel pressure flatten out it won't go up or down with engine vacuum it will only stay at one level which can cause the car to run rich/lean but most of the time it runs fine the fuel pressure w/o the hose attached with a factory regulator should be around 39psi whoever told you it would climb to 170+ psi was smoking crack and there is no reason removing the hose would allow fuel to enter the oil sounds like the old scare you into using us to fix your car ploy. just the fact that it runs like crap with the hose attached to the regulator indicates a fuel problem to me.