You can buy several different egt monitors and probes.You can get them to monitor one cylinder, 2 cylinders or all 8. Anywhere from about 100 bucks to thousands for some data loggers that monitor everything, including the last time you went potty! Some weld in some have a clamp on style probe that holds the probe in the header. Snow mobiles have nothing to do with it. I even have a new computech monitor and weld on or clamp on probe for a real good price if you want to message me I will send pics to you.