AMS Alpha Performance Carbon Fibre Air Duct & Air Box LidSmooth Design And Unobstructed Airflow In an effort of cost savings your 2. 0L M133 turbocharged engine comes equipped with a plastic air duct which is corrugated on the inside disrupting flow. To make matters worse it also features a big support pillar in the middle of the airflow path to keep the flimsy plastic from collapsing which hinders power output. With the Alpha Carbon Fiber Cold Air Intake Duct we eliminated these restrictions supplying your