Banks Power 13-17 Ram 2500/3500 6.7L Ram-Air Intake System - Oiled FilterFeeds your Cummins engine cooler, denser, outside air for greater power and fuel economy. Up to 66% greater flow over stock. Extensively tested and validated. Banks Ram Air Intake feeds your Cummins engine cooler, denser, outside air for greater power and fuel economy. Up to 66% greater flow over stock. Its performance is extensively tested and validated: in the computer, using Computational Fluid Dynamics software on the flowbench and later, on the