The scoops were designed for maximum efficiency in directing the incoming air to the stock duct openings. Many aftermarket scoops have a large flat area almost perpendicular to the oncoming air – not great for channelling it into the ducts as the airflow just “hits” this flat portion and creates turbulence.
BMW F80 M3 2013+ (Inc. M3 Competition)
BMW F82 M4 2013+
BMW F83 M4 2013+
BMW F87 M2 Competition – 2018 September + (M2 Competition requires slight modification on the air scoop when installing)