No Drone - This is what sets Corsa apart from the other exhaust manufacturers. RSC Technology eliminates the problem frequencies that cause interior drone and resonance at cruising speeds, making this one of the best Corvette parts you can buy. Improved Horsepower and Torque - Patented non-restrictive straight through design reduces back pressure and frees up additional power Great Performance Sound - Patented RSC technology allows Corsa to target and eliminate problem sound frequencies without muffling the performance sound. Premium 304L Stainless Steel Construction - Corsa Corvette Exhaust Systems not only look great, but they stay looking great. High Polished 304L Stainless Steel won't rust, even on the surfaces. Limited Lifetime Warranty - The Combination of 304L Stainless Steel Construction and the fact that Corsa Corvette Exhaust Systems don't use cheap packing material insure your exhaust system will look and sound great for the life of your Corvette. 50 State Emissions Legal - Corsa Systems are all designed to install rearward of the OEM catalytic converter, there are no emissions hassles.