KYOSTAR 3.5" Cold Air Intake System for BMW N20 N26 2.0T Engine The KYOSTAR 3.5" Cold Air Intake System is engineered for BMW vehicles equipped with the N20 and N26 2.0T L4 turbocharged engines, including F22 228i, F30/F31/F34 320i and 328i, and F32/F33/F36 420i and 428i applications. Designed as a performance intake upgrade, this system improves airflow efficiency by reducing factory intake restrictions and providing a smoother intake path for enhanced engine response.