I read in the manual about washing the air filter out on the stock 05 ultra. When, how and does it work..How often, how many times before its dead and needs replacing.
Unless somethings changed for 06 all the Stock air filters are paper, cant be washed, you could blow them out with air, but they are made to be tossed. Even the new screaming eagle filter is paper, least mine is.
I think its only the blue element ones. That is the case with all the parts that I've just ordered for an SE upgrade for my RK. Its a blue paper element and the parts guy said that it is washable!
May not be quite the K&N but wont' let the birds and hornets in!