KYOSTAR Cold Air Intake System The KYOSTAR Cold Air Intake System is designed for BMW S58 3.0T Twin-Turbo Inline-6 engines, specifically developed for BMW F97 X3 M and F98 X4 M platforms. This performance intake system helps reduce factory airflow restriction while supporting improved throttle response and enhanced turbo induction sound. Featuring a high-flow intake design with aluminum heat shields and performance air filters, this system provides a more efficient airflow