Decades of engineering experience in racing have ingrained BBI with a respect for function. An aftermarket exhaust system is one of the most popular modifications for any car, and it is so for a good reason. By using three inch diameter piping throughout the system and minimizing bends. The BBi Barcode exhaust reduces restriction and increases exhaust flow allowing your engine to free up more horsepower, torque, and improves throttle response. The improved exhaust flow provides a beautiful and more aggressive exhaust note. The BBI Barcode exhaust comes standard brushed quad tips.Upgrade the exhaust on your Porsche 911 Turbo to reduce restrictions and increase horsepower, torque, and improve throttle response.