K&N's replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. Our stock replacement air filters for street vehicles are covered by K&N's...
Warning: This product can expose you to chemicals that are known to the State of California to cause cancer. For more information, visit www.P65warnings.ca.gov.
It's important to know how we stack up against stock and our competitors in order to be the best. We mount each intake system on our test equipment to measure the airflow from zero to the max CFM of the vehicle. We then compare the results and make design changes until we have maximized the airflow while still protecting your engine.
Protect your engine.
While airflow is important, it is equally critical to insure that your investment is protected. To do so, we first determine the max CFM the vehicle will generate at wide open throttle as it is more difficult to stop dust the greater the airflow. We then start pulling this amount of air through the intake while literally shooting fine particles of dust at the filter. Any dust bypassing the filter will be caught in the absolute blanket to determine the efficiency.
Some competitors have testing done at low CFMs in order to show higher efficiency rates, so beware.
We're not kidding.
Our testing is so controlled that we even heat the absolute blankets pre and post testing in order to remove the humidity. The absolute blankets catch any dust that gets past the filter during testing in order to determine the efficiency rate.
Removing the humidity insures that you are only weighing what actually bypassed the filter. Protecting your engine while providing better airflow is our top priority.