I found this really good explanation on exhaust. I wish he would have spent a little more time on RPM range and the distance to the collector. (Long tube vs short tube headers). Where should we post this since it really applies to all gens?

 

And I wish he would have spent less time talking with his hands, it was starting to make me feel nauseous. Maybe he's Italian! lol
Thanks Gorn. I moved it down to the Drivetrain Tech - Intake, Headers, & Exhaust section.

 

Header dent test.