I recently installed the Fi2000r and some new K&N filters on the bike. Fairly easy install and a lot more responsive (didn't know it was possible!) In the original air boxes, there was an air intake hose that led the outside are in. On the install diagrams, it was not pictured. I have an '08 M109R. My question is, are those needed? I took them out just cause I figured it would make for better air flow. - Also, I remember reading something about this a while back, but I could not find the thread. Any thoughts are appreciated.