Most air intake systems are simple bolt-up installations, making them a great addition for easy power gains. An Air intake system is classified generally by the type of air they bring in. Cold air intakes typically pull air from outside of the engine compartment through the front of the vehicle or inner fender. Other air intakes simply pull air from the engine area. Cooler air is better to increase power, making the cold air kits better on average at building horsepower. N2 Speed carries hundreds of different air intakes to fit directly into your car or truck. Choose air intake kits from: AEM, Airaid, LMI, BBK, K & N, Air Raid and many more! All cold air kits have Free Shipping!