With over 400 internal muffler designs based on the technologies shown here, BORLA® offers exhaust systems to suit every vehicle, driving style and sound preference. Muffler body shapes, internal core characteristics, flow dynamics and more are tuned and harmonized to maximize performance and pure driving excitement. BORLA® ATAK® (Acoustically-Tuned Applied Kinetics) technology is designed for high-performance purists who prefer exhaust sound over their stereos. ATAK®-equipped exhaust systems deliver the highest available Decibel levels in the BORLA® street-legal lineup. And unlike inferior brands that lose significant sound quality at higher volumes, ATAK® is tuned like a graphic equalizer to shape and focus sound waves for optimum high-volume output. ATAK® technology is based on specifically-tuned attributes of the internal muffler cores, which are calibrated on a vehicle-by vehicle basis to deliver the most desirable sound.