aFe Power 54-81012-C Magnum Force Stage 2 Si PRO 5R; Cold Air Intake System Features: Uses Pro Dry S Air Filter For Maximum Air Flow Rotomolded Plastic Tube 56 Percent cfm Flow Gain 12 Horsepower Gain 15 lbs./ft. Torque Gain Improved Throttle Response Repl. Factory Intake For Improved HP/Torq/Styling 2 Year Limited Warranty Height: 16.00 Width: 13.00 Length: 23.00 Weight: 12.00 lbs Fitment: 2011/BMW/328i/Base Wagon 4-Door/3.0L 2996CC l6 GAS DOHC Naturally Aspirated^^2011/BMW/328i/Base Sedan 4-Door/3.0L 2996CC l6 GAS DOHC Naturally Aspirated^^2011/BMW/328i/Base Coupe 2-Door/3.0L 2996CC l6 GAS DOHC Naturally Aspirated^^2011/BMW/328i/Base Convertible 2-Door/3.0L 2996CC l6 GAS DOHC Naturally Aspirated^^2010/BMW/328i/Base Wagon 4-Door/3.0L 2996CC l6 GAS DOHC Naturally Aspirated^^2010/BMW/328i/Base Sedan 4-Door/3.0L 2996CC l6 GAS DOHC Naturally Aspirated^^2010/BMW/328i/Base Coupe 2-Door/3....