K&N Replacement Air Filter (33-2427) VW Touran The aftermarket system also improves

The aftermarket system also improves the airflow by adding a high-flow

Due to the exposed position of the OEM boost pipe and the nature of an engines heat cycle

We have also incorporated a 1/8th NPT water meth/nitrous boss into the design that is housed directly in front of the throttle body for maximum efficiency

and water-resistant

It is used with the OEM diverter valve to vent extra boost air into the atmosphere instead of sending it back into the engine's intake piping

K&N Replacement Air Filter (33-2427) VW Touran The aftermarket system also improvesK&N washable, reusable High Flow Air Filters feature a state of the art design of layered, oiled cotton media engineered to improve airflow and capture contaminants, and are designed to provide an increase in horsepower. Each performance air filter is reusable, engineered to last for the entire lifespan of your vehicle, and backed by K&N's No Hassle Lifetime Limited Warranty. K&N drop in replacement filters are designed to install easily into your