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About K&N Filters

What’s the Big Deal About Air Flow?
Simply put, Everything! At its most basic level, an engine is an air pump.  More air entering the engine increases the efficiency of the combustion process creating more horsepower and torque. Horsepower is a measure of the engine's maximum power while torque measures how quickly you can accelerate.

The K&N Filtercharger® is designed to increase engine performance in both horsepower and throttle response by reducing air flow restriction.

Maintaining optimal, unrestricted air flow becomes a problem when it must pass through a filtering medium. The level of air resistance varies depending on the size, surface area and physical attributes of the filtering medium. 

 

K&N users would probably be surprised by the amount of air filtration testing and scientific research that goes on in K&N facilities as well as in independent laboratories.  As the leader and originator of the high flow performance air filter we are always looking for new ways to provide excellent protection and maximum power for your car, truck, motorcycle, and just about anything else with an engine.  In 2005 more than 1600 vehicles were tested by K&N's R&D group on dynamometers in the US, United Kingdom, and the Netherlands.  In addition to these power and torque tests, we also performed more than 110 filtration tests and more than 1,200 air flow tests with our in-house state-of-the-art test equipment.  Select one of the links below to read or listen to more information on air filters and the science behind their design and function.

Disposable Paper Air Filter
  1. Pleated wood pulp bonded together.
  2. As dirt builds, passages are plugged and filter must be replaced in approximately 10,000 miles.
  3. Irregular passages filter out dirt on a go/no go basis.
  4. As fibers swell from moisture or oil blow-by vacuum pressure increases and airflow decreases.
  5. Turbulent filtered air.

 

Typical Foam Air Filter
  1. Lack of surface area hinders air flow and dirt holding capacity.  Open cell foam usually saturated with oil.
  2. Dirt builds on outside and blocks the openings.
  3. Higher vacuum pressures distort the cells drawing dirt deeper into the filter.
  4. Airflow is reduced as cells become blocked.
  5. Turbulent filtered air.

 

K&N vs. Disposable Filter Life

Stop Throwing Away Your Air Filter!
One K&N air filter will last the life of your vehicle.  Assuming you drive your vehicle 150,000 miles and bought and installed a disposable filter every 15,000 miles, you would throw away 10 disposable air filters.

 

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