What is the best kind of chassis dyno?
6. A: Ask this question of a dyno shop owner with a different kind of dyno, and you will get a different answer. I chose the Dynojet dyno (an inertia-type dyno) because it has the simplest design and it has proven itself in a wide variety of applications. The theory behind each type of dyno is sound, and in theory, each dyno should return an accurate horsepower number. Unfortunately, those of us with dyno experience realize that each type of dyno returns a different horsepower number, sometimes by as much as 10% or more. Contrary to what some people would have you believe, this does not mean that one type of dyno is more accurate than another. The more I learn about this, the more I believe that the different results occur because the dynos load the engines differently, and engines respond with different power outputs. The most important thing for a customer to realize is that the dyno is a tool. It is a tool that will give you an accurate, repeatable, relative number. The exact horsep
