My Infiniti has 2 so I'm guessing 1 or 2 is still is whatever is best for 1 is the same for 2. After reading almost all the air filter threads I still am not sure which is considered a good paper air filter and juyst as many pro's as con's on k&n. Bottom line is I'm no where closer to know what is a good filtering/air flow paper filter. Did I miss something?