Yes, the Xtreme system Corsa sells is properly named. It is crazy loud behind stock manifolds and cats. You throw long tubes and off road, or high flow catted connector pipes into the equation they are simply defining. I'm running the sport system behind long tubes and it screams when you apply the loud pedal. The guy at Corsa told me the db level of my exhaust was enough to damage people's hearing. I called him looking for a way to quiet the system down a little.