Well, my buddy/neighbor down the road stopped over a week or so ago with his Brute Force, tons of miles and little larger than stock ITP mud lites . Well, he smoked my ’10 Polaris 800, stock muffler gutted and outlet relocated to rear, clutch kit and K&N air filter, stock tires yet. Any way I can get more power? Thinking tires would help too. Only have about 450 miles on it. This was on gravel road, he got out right away and stayed there. Thanks.