I know that many of the DynoMax and Flowmaster muffler have directional baffles inside of them to help direct and quiet airflow. I'm sure that other companies have similar designs.



As for the muffler application for your car, I am not sure. What brand and model muffler to you have? Many mufflers out there are simply a straight through design pack with glass wool or another sound dampener around the baffled through-pipe. SUch as this: