Just pulled my KN out and reinstalled the slightly used OEM until I can find one of the Hp Purolator filter (not listed yet for the Kizashi).
Too many tests have debunked the KN myth of both good airflow (true - but they clog up and restrict airflow rather quickly) and high filter efficiency (false - worse then virtually all others tested - Amsoil filter almost as bad).
You can put almost anything in a race car - they are constantly rebuilt, so that is not a good reference. It does flow good initially (but you will need to clean it about every 10,000-12,000 miles to maintain that - not 50,000). However, you are letting through about 4-5 times as much dirt/dust during that time and over 100,000 - 200,000 miles for no real gain - it is gone!
Some paper filters flow almost as good as a new clean KN, but filter dust much better.