aFe Power 54-82082-1 Performance Intake System (Magnum FORCE BMW 535i N55) Outflows the factory intake by up to 10%; Produces an additional 32 horsepower and 60 pounds X ft. Torque max gains 5-Layer progressively finer oiled, washable cotton gauze media allows maximum airflow for maximum power One-Piece roto-molded sealed housing with auxiliary air scoop and carbon fiber accents Unique (patent pending) filter-to-housing interface for easy installation 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