:good:Well if any of you are on the fence about spending the money on a AFR sensor i would go for it, If you can afford it. I just finished my Teryx today and it flat hauls...the mail. I put the Muzzy power up kit in it, AFE intake, re-jetted the carbs(190 in the front and 195 in the back, 2nd clip on the aftermarket needles and 2 turns on the screws. Well i thought it ran good then. Well, I installed the WEGO 3 made by Daytona Sensors, It was easy to do. (3 wires two grounds one power)I learned right away that i was way to rich. I leaned things out to 12.8 to 13.0 and OH, Boy it was like adding another hop up part to the Teryx. There is no guessing on fuel mixtures anymore. You need a muzzy exhaust to use the sensor. It was pricey but i wont be cleaning my goggles much anymore.