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 dB (decibel) levels in the BORLAstreet-legal line-up... 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. The power of BORLAMulticore technology, with the sound of vehicle-specific acoustic tuning.