Tips to watch for when getting Dyno Tuned

Can anyone with experience on tuning EFI models on a Dyno machine give me a little insight as to what to make sure is being done by the tech tuning my bike ?
I would imagine ALL techs doing dyno tuning would be properly trained and qualified on thier shop equipment , but who knows ?? Just looking for a heads up on the whole thing???

The answer to the second question is no, that depends and who defines properly trained? A good tuner can work wonders but a bad tuner can wreak havoc and both may believe they are doing it right.

A lot goes on during a dyno run. A true tuning center will make several runs at various throttle positions in order to get the F/A correct at that throttle position. They will have a long probe that goes way up into the header portion of the pipe so they can get the best F/A reading possible. Depending on the operators skills and pace, it may take an hour or several hours.

On an older Dyno like ours, you end up doing a lot of testing and interpreting graphs, making changes, make a run, make.....

The real test is whether or not they guarantee to get it right and does it run right afterwards.