I got it done at GT Motorsports in Rancho Cucamonga. They charge $150/hour.

As far as the "fishy" comments from some of you, I don't know what I can tell you. I was standing right there in the room as they dynoed the car. Nobody messed with the dyno, it was 4 straight pulls. If you look at the times they were done, you'll see there's a 10 minute break between the first two pulls and the last two, and that the last two pulls are almost identical. That means that the ECU had stabilized on the dyno for the last two runs, and if we had done a couple more runs they all would have been about the same.

What other information can I give you to assure you that this is an honest dyno sheet, i.e. no tuning or monkeying was done? They did say my car made the highest numbers they'd seen for a stock WRX on that dyno. So maybe it's a fluke, maybe I got a cherry motor, who knows. But it's not faked or modified, and nothing was done to "assist" with the numbers. It was 4 basic straight pulls.