CTS TURBO B9 AUDI S4/S5 3.0T CHARGE PIPE KITDESCRIPTION CTS Turbo is excited to announce the release of the B9 Audi S4 S5 3. 0T TFSI charge pipe upgrade kit. Factory pipe that connects intercooler to the throttle body is made of brittle plastic. Its wise to replace it with an all aluminum high flowing CTS Turbo charge pipe. Our 2. 5 charge pipe kit will increase flow and improve the reliability of your B9 Audi S4 S5. Youll notice an increase in throttle response and a decrease in turbo lag. Two