AWE's 180 Technology® works a little something like this:

As exhaust gases exit the 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 chambers. Depending on the sound requirements of each vehicle, AWE acoustic engineers adjust the size and the location of the ports and the chambers. By controlling the size and location of these key elements, we control when the sound waves exit the chambers. The specific timing of when the reflected sound waves re-join the main exhaust flow creates a one-hundred-and-eighty-degree out-of-phase sound wave that cancels out problematic frequencies.

The sound produced by this formula is the perfect, exotic, signature note. Unlocked performance and perfect tone, every time.

Learn more here: http://bit.ly/2CvAeA5