So i just picked up a rzr 800s and the guy gave me a 83mm big bore kit with it but gave me no info on it, is there anyway to find out what company it is. There is also a afr gauge with a dobeck performance what im assuming is some type of tuning device with it. The gauge apparently isn’t working and the tuner isn’t hooked up if that’s even what it is.can anyone shed some light on what and how to use it
Thanks
Utah RZR Rentals

whence