I have a 2002 V-6 Convertable with the Sport handling package (Y-87 I think?). It has the split exaust with tailpipes on both driver's side and passenger side rear. Anyway, for the last few weeks when I first start up my car the exaust sounds aweful. It rattles and buzzes - really quite embarrassing. After it heats up (4-5 min.) the sound is gone. What gives? A co-worker said he thinks I've got moisture seeping into the engine and that it is taking a few minutes to evaporate from the heat of the engine. I wanted to tell him that this was one of the most retarded things I've ever heard, but I'm only 95% sure that he is way off base. Plus my baby is garage kept, so not a whole lot of chance for water to get in anyway. If it helps, she has 86,000 of mostly highway miles on her. What is the problem? Is it time for a new exaust (my thought as to the cause of the problem)? If so what would be a good option in the $300-$400 range?