Hey man, cleaning my for the first time with the plastics off tomorrow, instead of taking the air filter out can I just cover the hole on the top of the stock oem box?
I would recommend not using a pressure washer to clean your air filter. It tears the paper and will let more dirt pass. It will break down much faster than your seat or bar pad will from the pressure washer. Hand wash your filter and use a brush to get the dirt off, and flow water from inside to outside so the dirt doesn't get pushed through the paper filter element.