Cut away of a Dyno Max muffler #18381

This is kind of interesting because for a summer job in college I worked for a company at which all I did was put semi mufflers on a flow bench and test them, then I'd cut them open to provide detailed drawings. All of them, as I recall, simply pressed the tubes in the inner chamber walls but the walls were spot welded to the outer shell. It was one of the more interesting "temp" jobs I ever had.

-C