[PSI Power]

The key is you had a great time on the track in your own BMW.
Very addictive sport.

My only commet about DTC and maybe DSC is be careful when taking high speed corners. In going through a high speed corner or any corner where you are near the limits of adhesion and grip, you need to keep the power on to keep the car stable and steady. DTC/DSC can sometimes cut the power out from under you and/or even apply the brakes while traveling through the corner. This can cause your car to become very squirrelly and unnerving. I have personally experienced and have seen it may times. Once you start pushing the car a little harder, you should turn off these caution measures and control the throttle and braking yourself. That way, if you do lift or apply brakes, you know that you did it and you should know how the cars going to react so you can be ready for it.

My $.02 worth.

Have Fun.