Ten years in the making, we engineered an air intake system that is second to none. With extensive Research & Development, the Power-Flow series was released to the highly anticipated Truck Market. All Truck applications are designed with our patent pending MR Technology Tuning Process for maximum gains and a safe air/fuel ratio. One feature that makes the Power-Flow series stand out can be seen in the development of the Power Box. The unique design allows us to optimize every aspect of airflow. From the Cold Air Inducer to the Stainless Steel Pre-Screens- to the Velocity Stack and much more is offered only on the Power-Flow Series. Our Truck applications are made specifically for the vehicle and may or may not use the Power Box due to space constraints. Certain truck applications will utilize the Injen Power Shield. More Power, More Torque, NO FEAR!