K&N is just fine for this application.

Use cleaner properly. Lightly oil.

Besides by the time you would need to clean it. you could afford to buy new one.

used k&n. stills increases safe airflow more than the best stock air cleaner around.

you do not have to buy K&N. just open style of filter like K&N.

you will feel a little difference, but you will hear a bit bigger difference when hitting the accelerator.