aFe Power Momentum 54-74201 Chevrolet Corvette Performance Intake System (Oiled, 5-Layer Filter) Outflows the factory intake by up to 42%. Produces an additional 18 horsepower and 22 lbs. x ft. torque max gains 5-Layer progressively finer oiled, washable cotton gauze media allows maximum airflow for maximum power One-piece sealed housing features large clear sight window CAD designed, dyno-tuned, roto-molded intake tube with built-in resonance chamber 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.