[PsychoJJ]

Its a system of pipe that replaces the stock air inlet system known as the air intake that gets air from the outside of the car into the engine. The two types of after market air intakes are warm air intake which positions the filters inside the engine bay and a cold air intake which positions the filter outside of the engine bay and almost always in the fender whel.

The main uses of an after market air intake is better/quicker air inlet flow and in most cases they suck in a colder air then what stock intake systems do as they are not made out of crap materials and are not positioned close to heat producing engine components. AF intakes also add a slight performance edge to your vehicle in the way of hourse power and tourque as well as a little bit of a better exhaust profile tone but not much. Also it will up your gas millage a touch so long as you dont led foot it thinking your car is super fast after putting in the intake.