AWE Tuning Porsche 991 SwitchPath Exhaust for Non-PSE Cars Chrome Silver TipsPDK Drivers Rejoice. This system was developed first, on a PDK car. The exhaust was created to be 100% PDK friendly. In normal non sport mode this system will remain 100% drone free. And better still, none of the components of our AWE Porsche 991 SwitchPath Exhaust affect or alter any of the emissions devices on the vehicle, and therefore this exhaust is fully legal for street use. Finishing it off, the AWE Porsche 991 Tips are 90mm, angle cut, have a