Designed specifically for NPP equipped C8 Corvette, CORSA Performance C8 Muffler Delete NPP & AFM Catback Exhaust System offers aggressive sound and minimizes restrictions for maximum weight savings and performance. CORSA Performance Muffler Delete C8 cat back exhaust systems are designed exclusively for NPP equipped Corvettes to eliminate restrictions, maximize weight savings, resolve check engine lights, and bring the noise. Different from the Track Series Exhaust, the CORSA Performance Muffler Delete exhaust system retains the NPP valve eliminating CEL issues while also allowing for some sound control. To maximize the cruising experience this kit maintains the C8 AFM valve functionality in addition to the C8 NPP valves for the best on-road, in-cabin experience possible. This exhaust system is ideal for C8 drivers looking for the loudest exhaust combination CORSA offers for the NPP equipped C8 Corvette while still seeking to eliminate the multi-displacement flutter present at cruise. Each system has been Track-Tested and Dyno proven to maximize performance producing up to 18 HP and 16 LBS Ft. of TQ. all while shaving nearly 20 pounds from the stock exhaust system.