The issue is present in the X5 50i, X6 50i, X5/6 M and F10. This was confirmed by BMW to me today. I am looking, per BMW, at a minimum of 2-3 weeks before this issue is resolved or not. They are working with BMW AG, and with the design team to find the issue. Still no clear cut answer. The believe these is a vacuum/pressure fault between the engine and the turbos. The situation, which makes sense since my faults occurred under full acceleration and that would elicit this fault, has not been reproduced since they have had the car back in their possession.

So, most likely looks like I will be getting a replacement at some point, and this was the thought of BMW Service Manager with whom I spoke today.

So, looks like I am in my 328i loaner for the immediate future.

J