Battery cable was loose.. tightened up and have been driving hard to try to duplicate and no issue yet. Had previously gone off anytime make hard turn. Also fixed the exhaust mode issue... just a stuck actuator
K1514, what all did you end up doing to the car? I just bought her the other day and within a day of owning made a hard left to get on interstate and she lit up like a Christmas tree. Think I have it resolved now but time will tell