Over the past decade, chassis dynos have proliferated across the country, in theory making it practical for the masses to evaluate the performance of their engine as installed in the vehicle and ...

We may have goofed, but we're man enough to admit it. Despite the countless engine dynamometer tests car magazines publish each month, we've rarely-if ever-explained how an engine dyno actually works.

A very good friend of mine, noted engine guru, and PHR contributor David Vizard, was once being queried about some aspect of engine theory. The interesting part of the exchange was when the fellow ...