Y-charge pipe kit Porsche 991Turbo (S)Y CHARGE PIPE KIT PORSCHE 991. 1 991. 2 TURBO (S) Item no.: 001100006 KIT High Performance Y charge pipe for Porsche 991. 1 and 991. 2 Turbo(S) This unique Y charge pipe has been designed for the best possible internal airflow, while using laborious CFD simulation. All bottlenecks of the stock mounted Y charge pipe were eliminated and adapted to a uniform cross section. This means, the intake air is no longer unnecessarily blocked by cross sectional