I will try to keep this short... I developed a miss on driver side cyl, closest to the firewall. replaced coil, wire, plug, ect to no avail. Had no spark whatso ever. last effort was to try the PCM. Order a PCM for $200 form the east coast. Install, wont start and flashes "theft". So I take to the delaer and buy a new key, and pay for them to sync the two keys to the new PCM. They tell me the new PCM took the program, but would not start and still flashed "theft" I then pay the full price and leave. I get it home, swap the old pcm back, and fires right up on 7 cyls as it did before. This is supercharged and has a custom tune off a diablo sport, but I fail to see how that would make a difference. Any suggustions" I'm ready to sell this thing.