PERRIN Performance Charge Pipe. The OEM charge pipe for your application is restrictive and the design narrows down in certain areas which creates uneven airflow. The PERRIN design combines smooth bends with a smooth interior with a larger piping diameter that creates better intercooler efficiency. This charge pipe will come with all the necessary connectors to install onto the stock system for greater compatibility. Also, included is a CNC machined PERRIN turbo flange adapter that uses the same design as the OEM flange on the turbo side of the charge pipe and uses the OEM o-ring for perfect fitment with no leaks. The silicone connectors included in the kit are made using multi-layered fibers for extra durability and weather resistance.