I am having some problems with the exhaust in my 1990 300 e. I do not really know what is wrong but the car has become much louder. It seems that the sound is the loudest right under the car next to the drivers seat making me think it has something to do with the mid-muffler. I'm also thinking that it could have something to do with a pipe that is worn out or broken. Anyone have any ideas?

Thanks,
Robert