[oldeguy]

K&N are oiled, which attracts dirt, instead of the dirt going into the intake, it goes onto the filter. The standard filter, attracts dirt as well, but the paper on the standard filter gets clogged with that dirt. K&N filters have bigger gaps beween the filter media, allowing more air through the intake, but, no more dirt than the standard filter, because of it being oiled. More airflow, is good.