aFe Power Momentum 54-82202 BMW 335i (F30) Performance Intake System (Oiled, 5-Layer Filter) Outflows the factory intake by up to 37% . Produces an additional 11 horsepower and 15 lbs. x ft. torque 5-Layer progressively finer oiled, washable cotton gauze media allows maximum airflow for maximum power A unique, one piece, sealed housing with molded in louvers and a built in clear sight window Unique patent pending filter to housing interface This product is not CARB exempt at this time and is not legal for sale in California or use on vehicles registered with the California Department of Motor Vehicles.