Percentage diff between a Chassis Dyno and an Engine Dyno

[art leong]

Originally Posted by Jimi B

It also may vary depending on the type (load bearing edy etc) and brand of the dyno. The operator will also play a roll in it. You can make them read what ever you want. Mustang and Dynojet are the 2 most popular chassis dynos, and Mustangs tend to read a good deal lower. All though it may argued, one may not necessarily be better than the other. In the end most good tuners will tell you that chassis dynos are more of a tuning tool to help compare you percentage of change in power more so than actual power number. Not sayin that the numbers are not accurate. Its just a fiercely debated topic.

We first ran the car with the box (caravan) manifold. The switched to an ITB set up.
We saw a 10 HP increase through out the range, and an almost 10 foot pounds of torque with a broader flatter curve.
This was a Dyno Dynamics Dyno I don't know how to compare it with a Mustang or a Dynojet