I recently got a baseline dyno done on my car, on one of those $20 dollar dyno days at a local shop. The dyno used was a trailer mounted Dynojet.
The first run (004) was in 4th gear - I told the guy to use 5th, since it's a 1-1 ratio (I think?) (005) was the run in 5th gear. Overall, it's pretty spot on with other baseline dynos I've seen, and I'm happy with that. I can't wait to go back with some bolt ons.