Banks Ram-Air Superiority. Cold-air intake with large filter, enclosed housing and large tubing offers huge improvements over stock flow, increasing power and fuel economy. Banks Ram-Air Intake System replaces the factory's flat panel filter with a large conical filter that provides maximum high-flow filtration. The Ram-Air's opening dwarfs the stock's inlet, and without the 90-degree detours that choke airflow and kill power. The huge inlet, enclosed housing and much larger tubing reduce restrictions, dramatically improving airflow to the cylinders. Another key element is the tuned "Helmholtz" resonator which eliminates engine drone while maintaining a throaty sound.