hello i just bought a grand prix gtp supercharged so i could have something to mess around with this summer and the car was running great. but it started to misfire tracked it down to cyl #5. changed the plugs and wires no luck. pulled out the noid lights and sure enough no injector pulse to the #5 cyl. wire harness looked good so i tried a pcm from a buddys buick riv supercharged and the noid lit up like it should(car wouldnt run, but the pcm wasnt flashed for my car). with that i went out and bought a brand new pcm and had it flased for my car, put it in and the same thing no injector pulse to the #5 cyl. any ideas?