There is no actual proof that dynamometer testing might damage the car in any certain way. While performing tests, dynos don’t interfere with the engines performance and more importantly, don’t do any damage to it. Some of the things that may cause damage to engines are over-revving, excessive heating, shock loading or incorrect fuel or ignition settings. If however your engine malfunctions after performing a dynamometer test, it’s almost certain that the testing, if properly done, wasn’t the... read more