Good designed high quality after-market Cold Air Intake Systems (CAIs) fight against:
Hot Intake Air Temperature:
Not to be able to breath at a location with lowest environmental temperature and adding up the engine temperature through the air pipes result the increased air intake temperature. As a result of a simple physics, increased temperature of air reduces the ratio of the oxygen in the air. And, less oxygen reduces the combustion quality. Significantly less power, high fuel consumption, detonation/knock (killing the engine) are the main results of the hot air intake temperature. Please bear in mind that the Engine Computers (ECUs) retard the spark advance and boost (if forced induction engine) to avoid engine damages which also helps reducing the engine power.
Restricted Air Flow:
As the air gets better flow (RAM affect if possible) simply supplies more oxygen for combustion, provides higher volumetric efficiency at the engine and helps reducing also the air temperature; makes a great impact on the power and the fuel consumption.
These are the only reason you see the open air filtration systems out of the bonnet or bumper of the race cars. For some cars that have no branded CAI Systems available, ChipCentric offers custom-made systems which you can check at our Custom Cold Air Intakes section.