Mine was done on an antique Stuska with none of those fancy computer controls. Brake in one hand and throttle in the other. He has relented and added data acquisition since mine was done.

We picked our RPM points, applied brake until it held each point with the throttle firewalled and waited a few seconds until everything stabilized to take the reading. (BIG 12" gauage). His dyno is track proven to be about 10% stingy.

Kevin