Agree with you, that's why I cannot wait to back up my dyno numbers with a time slip. A dyno is just a measuring tool no different than a flow bench and the accuracy is dependent upon the operator and the quality of the machine. To me where these tools shine is in seeing the before and after results of the changes made, regardless of the accuracy of peak numbers you can see improvement or regression. I could have never found the 30hp hidden in the timing curve of my engine if it wasn't for the dyno. It was ran with locked timing first then the timing was checked every 1k rpm to figure a curve out and it was not a conventional one. I would have never found that at the track, it would have been put some timing in help the 60/hurt the big end or vice versa and not nailing down the specific rpm range where the engine wanted timing and did not. There are some reasons as to why mine wanted such a specific timing curve but again the only reason I learned about it was from the dyno. Knowing that it makes sense these guys use a dyno to wring every last ounce out of a non conventional mixture of parts to make max hp. I got by without dyno time for years and to be honest the only reason I have it now is because I am an owner of the thing, it is definitely a blast and a wealth of knowledge.
