Have had my 05
MCS for two weeks and it almost immediatley developed this noise. Took it to Downtown BMW (Toronto) and they fed me a load of crap saying that it was normal and due to the gear spacing. I brought the car to another dealership, with printouts from this forum, and spoke with the service manager who agreed that it was a dual stage flywheel. It's in there now being replaced and will be ready tomorrow. Hopefully this will solve the problem.