Agency Power manufacturers different Intakes that are engineered and tuned to provide the greatest efficiency and power. Cold Air Intakes, Short Ram Intakes, Air Boxes, and more.  Air intake kits are necessary to get your vehicle the proper amount of air flow it needs to produce efficient and maximum power.  Many times by adding an air intake you will gain throttle response, increased engine noise for a sportier sound, and horsepower gains throughout the entire power curve.