COramprat said:If this was directed at my post by safe I meant not having to run WOT on the street. Not whether your tune on the dyno would be better or "safer" enginewise than a street tune. Some shops really don't have a 'safe' place to street tune so they install a dyno. I'd have to think a good tuner could compensate for any variances between the street or dyno tune anyway. Turbo cars notwithstanding.
You can't recreate wind resistance on the dyno floor, or the correct coolant temps, IAT temps etc, YOu can have the biggest floor fan, but it isnt the same.