88GT Replacement Cam

You need to get the speed density guys in here - your car's efi system is dependant on a vacuum signal through the MAP sensor. They are much more sensitive to cam replacements which lower idle vacuum than the maf cars are. You say "cams" - there is only one. You'd probably be much happier with performance gains by doing things other than replacing the cam. The engine will be much happier with a different intake manifold and a different set of heads before you try replacing the cam.