Borla has developed a revolutionary new exhaust technology that enables our engineers to deliver unprecedented vehicle-specific control over the acoustical note of an exhaust throughout the RPM range, while retaining 100% of the power-adding capabilities of Borla?s patented multicore design. Called ATAK(Acoustically-Tuned Applied Kinetics), this new technology produces the highest available dB (decibel) levels in the Borla street-legal lineup, and is designed for high-performance purists who prefer exhaust notes over their stereos. The focus of ATAK is to pump the volume while retaining clarity of sound, avoiding distortion typically found in louder exhausts. With ATAK, the sound output is tuned like a graphic equalizer to shape and focus sound waves for optimum high-volume output. The development of each ATAK system begins with extensive study of each vehicle?s acoustical properties. The technology is based on custom-tuned attributes of the internal muffler cores, which are calibrated on a vehicle-by-vehicle basis to deliver the most desirable sound. "The distance from the exhaust manifold to the rear bumper, the shape of the underbody shielding, the amount of ground clearance, all these factors affect the sound, and they?re different on each vehicle. With ATAK we take all this into account, and the result will blow you away," says company Sales Marketing Manager, David Borla. Cat-Back systems (PN 140329 and 140372) will blow your socks off ? with no drone.