Hushpower is the latest generation in the Flowmaster family of performance products and its patented technology is entirely different than that of the traditional Flowmaster chambered design. Although it does utilize a packing material, it is unlike traditional straight through mufflers. The Hushpower design features a perforated dual taper inner core which addresses two separate but related mediums: sound wave energy and exhaust flow energy. The multiple angles of the inner core have been carefully engineered to reflect a portion of the sound wave energy passing through the muffler, and redirect it toward specific areas for absorption and cancellation. Additionally, enhanced exhaust airflow is achieved by an effect referred to as Controlled Laminar Flow. This effect actually accelerates the exhaust flow as it passes through the tapered core and expands into the large volume outer core area in multiple layers. This all adds up to a design that delivers distinct torque and horsepower improvements over straight through designs, along with a deep mellow exhaust tone. Developed by Flowmasters Advanced technology Group, Hushpower is truly the most revolutionary advancement in exhaust technology in 20 years.