ive found alot.... my buddy has one he got from m&m atv in oklahoma , my other buddy in cali has one... but its like a $550 system .. bet data logs everything-rpm .. top of the line.

tryin to see whats out there and being used

 

where is the optimal location to put the sensor on a 2-stroke??

 

Exhaust looses enegy (temp) as it goes down the pipe so the closer you have it to the cylinder the better. (within reason)