CORSA Exhaust straight-through design coupled with RSC noise cancellation technology allows CORSA to tune out the undesirable low frequencies that cause droning, while reducing back pressure. A reduction in back pressure allows the engine to produce more horsepower and torque. CORSA uses its patented Reflective Sound Cancellation (RSC) technology to eliminate low frequency resonance while minimizing backpressure. Sound waves are reflected within the muffler case, producing a cancellation wave effect, with no flow restriction and without electronic devices. Corsa Exhausts System Features: