Our 80mm Throttle Body upgrade kit is a direct bolt on for all M113 Kompressor engines. It increases throttle body size an additional 6mm over stock which helps to reduce the bottleneck in intake airflow. The car's part throttle response is greatly improved as is the top end pulling power. This is A MUST for modified cars, but also offers significant gains on stock vehicles. We have seen as much as 25-30rwhp. We include everything needed to install it in your vehicle: AMG 80mm Throttle body, AMG 80mm Supercharger inlet, 80mm Y-pipe, throttle body gasket, Supercharger inlet gasket and 4 stainless bolts.