i just bought a set and some 17.5 pilots. i havent tried anything yet. was looking for some feedback if anyone out there has run these in this sled or a zrt800.

I dont run A/C but every sled that ive set up with the UFO's has showed great improvement from bottom to top. it will change your jets by about 2 sizes and you will need to adjust idle. BE EXTREMELY CAREFUL when dialing them in. Go 1/4 throtal for a few 1000 feet, shut it down, check plugs, adjust, ect. Repete these steps in 1/4 increments till you get your self close, and take baby steps there after. In a 96 XCR 600, stock pipe, light weight silencer, i have it set up with 320 mains and am possibly going to 330 to give you an idea. Do this on a day thats resembles close to your usual riding weather or close to it. Good luck and one more tip, have a friend with you at the time because if your way off, dont even try riding it back, tow it back and make the changes. Jets are cheaper then pistons.