Cheers Shreksta, I used this brush, which is the best cleaning brush ive ever owned and i used muc off motorcycle cleaner and a hose. I removed the cone filter and did a k+n re charge and put a plastic bag over the open trumpet. I had to go over a few bits twice and had to wait for the filter to dry. Im gonna get some auto glym engine cleaner for the future and some longer brushes apparently the auto glym stuff is the best?