E36 exhaust (?) question...

["Shemp" <xombie@xxxxxxxxxxxxxx>]

Good Evening Digestees,

I am a newcomer to the BMW Digest - although not to the Alfa Digest.  I just
acquired a '97 328is for my new daily driver (which, by the way, I absolutely
love) and hope I'll be welcomed here on this Digest.  I have found the
(er..."other") Digest to be an endless source of information, entertainment,
and sometimes enlightenment - that's for sure.

My question for now is, sometimes on acceleration, I hear a slight buzzing or
light rattling sound which I believe to be coming from the cat.
converter/center muffler (exhaust shroud?) area.  I am guessing that the
randomness of it's appearance is due to the operating
temperature/expansion-contraction of the metal at that given moment. Is this
at all a common issue with this particular car?  Oh, it's the original exhaust
w/ 55K meticulously maintained miles on the car.  Thanks for any help in
advance, and glad to be here,

- -shemp

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