Hey Guys,
I came across this thread, and apparently there's a SIB on this issue.
I printed it out, and am gonna bring it in to the dealer the next time i need to fix something (my exhaust is rattling again. . .. .)
http://www.e90post.com/forums/showthread.php?t=235395
SI B 34 03 09
**SI B 34 08 08 (can't seem to find this one .. .i think older version)