help with ignition or fuel problem

I recently replaced quite a few ignition and fuel parts to resolve some issues i was having.the problems i have now are different issues,but could be caused by fuel or ignition.its a 1991 gt turned back in to completely stock form.pulled all plugs and got 150psi in all cylinders.all 8 spark plugs are wet with fuel.its either getting too much fuel or the fuel isnt getting properly burned.its running but it only idles at about 600 rpm.if you step on the gas it sounds like the timing is off but ive got it set perfectly at 10 degrees.ive replaced the coil,pip module,ignition module,coil wire,fuel pump,relay,inertia switch,fuel press. regulater,and the computer.didnt have this problem before i removed a typhoon intake and replaced it with a stock intake.anyone have any ideas.the check engine light comes on until it warms up and then goes off,but the car doesnt run any better or any worse when the light goes out.any sensors that might cause this problem.my handheld code scanner pulled a 31 and 66 code with key on-engine off but i havent done a run test yet.the dist. cap,rotor,and wires are the only things i havent replaced so far.
 
Check to make sure the EGR position sensor is plugged in and that it baselines under 0.50 V KOEO (but above 0.20 V).

On a semi-related note, EGR gasses are being introduced at idle, the car would idle like poop. Be sure your EGR valve isn't stuck open (from carbon build up).

Good luck.