This is a stupid question. Some guy told me I should get my bike on a dyno. Why do people put their bike on a dyno? I have heard of people putting cars on a dyno but dont know what a dyno does. Does it have something to do with air fuel mixture or tell you how fast your bike/car is when to shift or how far can you redline your bike.....dont really know can somebody explain the advantages of a dyno to me.