aFe Power Magnum FORCE 54-12392 BMW 3-Series (E36) Performance Intake System (Oiled, 5-Layer Filter) Outflows the factory intake by up to 80% . Produces an additional 20 horsepower and 25 lbs. x ft. torque 5-Layer progressively finer oiled, washable cotton gauze media allows maximum airflow for maximum power One-piece, black powdercoated 16-gauge heat shield designed to clear larger style HID headlight housings Unique coupling smoothens the air transition into the intake tract and allows kit to fit on both US and EURO Mass Air Flow Sensors 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.