aFe Power Magnum FORCE 51-11572 BMW 525i/530i (E60) Performance Intake Systems (Dry, 3-Layer Filter) Outflows the factory intake by up to 45% . Produces an additional 7 horsepower and 7 lbs. x ft. torque 3-Layer non-oiled, washable synthetic media for the perfect balance of performance, protection and convenience 16 gauge, one-piece powder-coated heat shield Heat-insulating molded plastic tubes replace the stock intake tract 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.