Finally getting dyno'd-suggestions or advice?

[san~man]

Well, my cars mileage has been so bad, I'm taking it to a dyno to get the A/F read and to just see what it'll do at the wheels. My appointment is for next Wednesday.

Anything I should know?
Anything I should do in advance?

Car is a 01 GT auto. No, I don't think they can lock the TC, so should I expect something other than a dyno graph spike?

Thanks guys

 

[JonJon]

Bring a vid camera, it's fun

I went for the first time 2 weeks ago, I didn't bring anything and didn't need anything. The people there were really cool and it was really fun. Definately plan on going to some more dyno days.

Oh, and my bad mileage was not an a/f problem, it looks normal Mileage has been going up though, 16.9 last fillup... Maybe it was just the winter gas. But you're in HI