Originally Posted by Jp7
They do clean better than the stock filter without causing any extra restriction. .
Do a search on "Dusted Turbo".
The K&N filter was developed for offroad races like Baja, where the paper filters would plug up in no time. The K&N's wouldn't plug up, same amount of dust, guess where the dust was going........
K&N knows how much dirt their filters pass. If they didn't, they wouldn't come out with products like this
for use in "very dusty conditions":
....and they wouldn't put statements like this in the warranty fine print:
"K&N will not be responsible for any other expenses incurred by the customer under the terms of this warranty, nor shall it be responsible for any damages either consequential, special, contingent, or otherwise; or expenses or injury arising directly or indirectly from the use of the K&N Air Filter. "