As the others have said, use the stock setup...I am running a mod/stock setup on my 910. I am running a BRtech hood with all of their vents and it works great. Seal everything up as the others have said, I have also put a K&N foam filter on the underhood plenum to filter anything else that might make its way into the air box. I hope this helps, there are other manufacturers of filters out there, just look for them...SLP, Brad, BRtech,someone in Alaska makes em'.