Hey guys, today I decided to clean my air filter its a K&N. When I took the cover off it has a foam piece on top of the filter that is labeled K&N foam filter. The foam filter is deteriorated and very fine particals are coming off of it. My question is do I need it, I called advance auto to see if I could buy just the foam piece and he said no it comes with the filter. He then said that the K&N filters are so good I don't even need it. Do you guys agree with him or should I try and find a piece of the same type of foam and cut it to the shape I need. Only had bike 6 months and p/o gave me cleaning kit. All responses will be appreciated.
