I have a 91 std converted to obd1 with a p06 ecu. The car runs great while warming up but once it gets to normal temp it bogges out and misses real bad. It seams to be getting worse. On one trip today it wouldn't start until it let it cool down for 10 min and then it seemed like it was down a cylinder. Someone said it may be the coil or icm going bad does anyone know why it would run bad only when hot? I do have a spare icm so im going to change that first and see it it helps.