I just got done pulling the headlight off my 900 and realized the weatherstrip around it is not doing much of anything. There are several posts about this on the forums I found. If you have not sealed around your headlight you are sucking snow directly into your intake. Clear silicone sealer looks to be the preferred method for sealing this. Also take off the cover under the hood and seal the holes from the window and anything else Polaris decided not to seal.
It might also be a good idea to seal all the screws in there so they can not vibrate out and fall into your intake and get sucked into your engine.
http://www.snowestonline.com/forum/showthread.php?t=131016
It might also be a good idea to seal all the screws in there so they can not vibrate out and fall into your intake and get sucked into your engine.
http://www.snowestonline.com/forum/showthread.php?t=131016