The fifth and sixth generation Corvettes are engineering masterpieces. As the first Corvette built for comfortable extended highway travel, the C5 Corvette has plenty of power and torque with excellent fuel economy, and the C6 continues to improve the breed. Accolades aside, the stock exhaust systems leave a lot to be desired. For one, the puny bell-shaped outlets do not fill out the valence. And the sound? Just a low hum at road speed and non existent at idle. Whether satisfying federal regulations or NVH objectives, engineering an OEM exhaust system is quite a feat. The result? Mundane exhaust systems on factory built performance cars.