2011 Sportsman XP x2 850 oil in air box fix.

*UPDATE*
I had oil in the air box after some hard riding so I removed the filter located on the breather and haven't had the issue since. I believe that the filter gets saturated with oil and doesn't allow the vacuum from the intake to be dampened.
After doing this I haven't had the issue.
Original post and updates on Polaris ATV Forum: www.polarisatvf...