Tony
I would be a little concerned if the Dyno operator is not actively engaging you in conversation regarding A/F ratios, fuel consumption and BSFC, among other things after each pull, if he is not reviewing and printing out complete data files between each run or at the end of the session for you to take home, and if printing, scanning and emailing records is technically challanging.

None of this makes the HP and TQ data any more or less accurate, or any higher or lower, but overall seems odd to me.