That’s why dyno operators should give out corrected and observed numbers plus fuel flow so you can verify the results. And the correction factor.
And then they need to teach the end user why all that stuff matters.
I see correction numbers between 8-12% around here. That’s a big number. So if guys are looking only at the corrected numbers on average they will be wrong by about 10%.
That’s huge. If you look at the observed numbers and the CF and your local weather at the track you can get a much more accurate estimate of what the car should run.