When I got my car it was "stock" and I took it to Brian for a Dyno Day. Turns out the car was very lean and Brian had me clean the MAF and to come back. Came back car was still lean, he pulled the tuned and it turned out someone had messed with it before I got it.
Moral of the story
-Dyno Brian is a great guy, won't screw you over, and is honest
-Dyno numbers don't tell the whole story