K&N K&N Premium Cabin Air Filter: High Performance, Washable, Clean Airflow to your Cabin: Designed For Select 2008-2019 Honda and 2019 Acura RDX Vehicle Models, VF2033 Now 15% Off $45 $38 at Amazon ...

If WOT performance is most important, the K&N filter used in this test provided about 50% less restriction to airflow, with the 1.6″ of H20 difference in air pressure drop at 350 CFM making for ...

Well, Jason Fenske of Engineering Explained put these claims to the test, and it turns out that yes, high-performance air filters do actually yield more power. But not much.