[niterydr]

Good post John!

Like he stated we bought our dyno for its versatility, repeatability, tuneability, and any other ...ability I can't think of right now.

Every dyno reads differently. It is about what you use it for that makes the difference. Our is used as a prototype machine. We use it to design and test parts, and to design and test engines. We tune street and race cars with it, and we find it to be very accurate and easy to use, that is why we purchased it.
I can actually see if a change I made to a timing map made a difference LIVE, that is a fact that dynojets can not do.
I can see and graph different conditions by changing the smallest of things (like spark plug gap).
Accuracy is all about who is operating the equipment. We strive to be as accurate as we can, to give honest and real results.

I race cars, I do not race numbers. When the light drops, the bullshit stops.
I use numbers to realize potentials of vehicles and setups. They are nice for comparision sakes, but tend to make people over-confident and down right defensive about things.

I did not want this to turn into a dyno debate, just an interesting article I found on how dynojet came up with its "HP" formula and the wondeful job the creater of dynojet did marketing the product and bringing it to the masses.