TopspeedLowet
You are absolutely correct. I have seen this done more than once. Customers are unaware of this and only assume the dyno system is as correct as a calculator. Telling theirselves, It must be right because the dyno sheet says so.
I have also seen this used in a negative way as well with dishonest dyno operators.
I have seen the dishonest dyno operator run a motor knowing it is going to put out a low number, telling the engine owner after a few pulls on the dyno that he thinks his engine is capable of more horse power and if the engine owner would let him play with it for a day or so he will see what he can do. All the while the dyno operator knowing hes about to take this guy for a ride.
One or two days later the engine owner shows up and the dyno operator relucantly tells the engine owner He was able to get a little more power, I hope your happy with it. The dyno operator then indicates, Well I had to do this and I had to do that and this is going to cost you this and that is going to cost you that, putting the engine owner in an uncomfortable state,THEN>>>>>>>>>>>
The miracle dyno pull occurs, the engine owner is jumping up and down with the numbers his motor is making and he lays that wad of cash in the dyno operators hand.
EVERYBODY IS HAPPY BUT IT AIN'T RIGHT