CORSA's Patented Reflective Sound Cancellation(R) (RSC) Technology allows acoustic engineers to create a drone free exhaust experience, styled specifically to fit the personality of your vehicle. Each system is designed to increase vehicle performance, deliver an AGGRESSIVE exhaust note under acceleration and a DRONE - FREE EXPERIENCE during cruise. This system features a CORSA Performance engineered valve assembly that meshes seamlessly to the vehicle's stock actuator to retain flawless functionality of the Active valved exhaust system. Performance gains are not affected by sound choice.