Rep rode in the car and heard rattle, got out kicked the muffler with me and shop foreman in car. We could hear the rattle. He got back in and said replace muffler, if it requires ordering both, replace both with hangers, NUFF said, kinda like him.
Did get in a sideways glance at Mr Rude shop foreman...

Did not have good news on the idle surge--reving.
Basically said I was at the mercy of the software guys in Germany...oh well.
Sad to say BMW will not fix what I consider a safety issue.
Will gladly help anyone that can assist with getting the attention of the correct people.

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2011 535i GT Alpine White/Black
Sport/Winter/Sound/Conv/Nav/Heads Up/Rear Shades/Rear Camera
1979 911 SC Porsche Targa
2004 Volvo XC 70 - Lady car
1999 Sea Ray Sun Deck
2001 22' Party Barge Pontoon