I recently, well not too recently got my car back on the road. It drives fine except that since about last week it has a ricey sound to it... i checked that there was no hole in the muffler the most i really could without a jack... havent really had it jacked up but once for about 10 minutes before it got to dark to see. I didnt see any holes, or cracks or bolts missing... Maybe i dropped a gasket or something? anything will help.

 

could be further up from the muffler, could be one of the bends or the cat, take it to an exhaust shop and have them check it out