The importance of an air filter that equips the car is to protect the engine from the impurity that exists in the atmosphere like dust, leafs, etc, and this way we protect more parts from the engine. So we need to prevent impurity to enter the engine but in the same time we need a lot of air for the combustion chamber and so appears the sport air filter. The performance of air filters always had been the starting point for those that want to take the first steppe in tuning. We can begin with air filters because their more easy to use and chipper then the other performance components that are used in tuning of cars.

      It is believed that the first reason to convince our self to buy a performance air filter is the sound that the car makes after, and it is a pleasure for our ears, but a general opinion provides the rumor that the performance air filters give you even more horse power, minimum of 5 horse power even for a basic engine.

      If I told you that the air filters don’t do anything else then a pleasure sound, would you believe me? The answer is very simple; to gain more horse power you must fallow certain conditions.

Air filters performance
      Everybody knows that more oxygen in the combustion chamber to be blend with fuel, we obtain more horse power, but what are the basics of air induction into the engine and the performance of air filter that allow more oxygen to enter the engine. The aerodynamics, but that is not the right term to use here, in our case we can call it air layout, is so complicated that we will never know if we replace our standard air filter whit a opened air filter then we will have more air provided to the engine. So you must have some mechanical knowledge about the air system to understand and recreate the layout to obtain more power.
Application in the air tunnel

      Let’s talk about the tests in the air tunnel, like if we change the stock air filter with a new one from K&N models, if you want to equip your car with this kind of air filter. So we simulated a test in the air tunnel, we can measure the air resistance and we collect the next results: the 100% percent is a maximum resistance of the air flow, and this means that the air is somehow stopped by the air filter or the air box, when the air makes it way to the combustion chamber. Normally will be, if we totally remove the air systems (air filter and air box) to decrease the resistance of air that runs into the engine to a minimum of 37.5% percent. This test proves to us something very important like if we change the standard air filter with a sports one, we will do this for nothing if we don’t make changes in the air box system, but the most unexpected result is that we remove our air filter from the car and the air box is empty the air resistance is the same like if we have a air filter applied to the car.

      The leader of the market, in manufacturing air filters, is K&N that is known even from the year of 1969, the company was able to perfect in a continues way the sport air filters and to launch on the market more competitive and sportive air filters. At this hour they the world wide leaders in this segment.

      The secret of the air filters is to maintain the filtrate element to a critical level, leaving the surface of the air filter more opened so more air can pass thru this. We can see the result by observing the car performance.