[Goat Blower]

Dynojet used a motorcycle to set a standard, and someone a hundred years ago set a standard of how much force 1 horse can produce. Either way it's not a perfect mathematical equation, but it works well and it's repeatable. Personally I think it was dumb for other dyno manufacturers to use a different standard. Dynojet set one that is universally accepted and it works just fine. Although making other dynos read "dynojet numbers" is usually just a few keystrokes away. Having 3-4 different readings to compare from 3-4 different dynos just confuses people that like the numbers. I don't see where any of them is more right than any other, but they all work for their intended purpose, be able to make changes on your setup or tune and gauge the difference.

Funny, that article is a reprint from the same one Hot Rod had about a year ago. A few words and pics were changed, but other than that, the same article.