The Trail Tech Vapor is a good product... for some machines more than others. I'll explain...
1. They attach to the quad at the steering stem/bar mount point. For our quad, it means the idiot lights have to be relocated along with the gas tank breather hose.
2. To measure RPM, you need to attach a lead to your spark plug/plug wire.
3. To measure temp, you need to connect to radiator hose.
4. To measure speed, you need to attach sensors to front wheel and a-arm. It measures how many times the wheel sensor goes past the a-arm sensor... The problem with that is, you also have to enter the circumference of the tire into the unit to get an accurate reading on speed... In other words, how many inches the wheel travels in one revolution.
roadkill
P.S. I got your PM about finding a muffler.