Thanks for all of the help guys!! I cound a vacuum leak under the snout where the previous owner hooked up the boost gauge. Now my MAP is working correctly, the fuel trims are down to about +/- 2-3. I took it for a ride and under boost its sputtering so i came home and pulled a couple plugs and found they are worn out. one of them was gaped at .80 and the other at .85. The gap looks huge, I run a .32 on my supercharged mustang but i run 16lbs of boost on that car. What should the gap be when i replace the plugs and wires?

Thanks again!!!