MST Cold Air Intake For B9 Audi A4 1.4T & S4, S5, RS4, RS5 3.0TUnlock more performance from your Audi with the MST Cold Air Intake System, designed for the B9 generation A4, S4, S5, RS4, and RS5. Engineered to optimize airflow, this intake allows your engine to breathe more efficiently, improving horsepower, torque, and throttle response while reducing turbo lag. With a sleek black finish and aggressive induction sound, its the perfect combination of style, durability, and performance. Features Delivers cold air