The Touring Edition is the perfect configuration for those who appreciate a hearty muscle tone without having to bear in-cabin drone. Construction of full 3 Inch and 0.065 Inch-wall stainless steel while featuring 180 Technology ®, the Touring Edition roars when you want it, and quiet when you need it. Sound Perfection- 180 Technology ® by AWE. As exhaust gases exit the Mustang GT’s 5.0L engine and flow into an AWE 180 Technology ® equipped resonator, they pass through strategically located ports, and into reflection chambers. Sound waves, carried by these exhaust gasses, bounce off the walls of the reflection chambers. By controlling the size and location of the ports and the chambers, we also control when the sound waves exit the chambers. The specific timing of when the reflected sound waves rejoin the main exhaust flow creates a one-hundred-and-eighty-degree out-of-phase sound wave that cancels out problematic frequencies. More on 180 Technology ® by AWE in the tab above.