Last September, when I went to the dealer to have some work done on my RZR, He was real proud of the fact that they had just got some K & N air filters in. A couple of months later a man I know was really happy about installing some new air filters on his ride. I am not a mechanic. I am just a parts changer. What is the advantage in installing new air filters? Do they give you more power? Do they make the motor run cooler? Do you get better gas mileage? Any information will be greatly appreciated!