[A98Coupe]

Lippy,

Pleased to hear to solved the problem. I had a similar issue when I first installed my MSD 6530 unit this year. The engine would fire up OK but then immediately die. I checked and doubled checked all the connections, completed the spark test and confirmed no spark. Finally discovered the problem by accident. The engine ran fine without the serial to USB COM cable connected to the box. Turned out the cheapo serial to USB RS-232 cable was preventing to box from firing. I bought a more expensive cable as recommended on the MSD forum and I haven't had any problems since. Pretty much managed to tame my monster cam - just need some fine tuning on my carbs to eradicate some very slight surging at light cruise. The MSD 6530 set up really does work!