My Karmen 62mm supercharger pulley grenaded on the second track session. Punched two big dents in the hood. Down for the day!
Also in about the middle of the first session my BAS ESP light came on. Not sure what caused that but it stops the transmission from shifting and shuts down the supercharger. Came into the pits. When I restarted the car everything seemed OK. Then went out for the second session and that's when the pulley grenaded and the BAS ESP light came on again. Never did get a full session run.