I had to run up to DB Performance to pick up some parts for a friend and figured I would throw it on the dyno just to see what's up. I was a little surprised with the results! I'm running a Perrin catted downpipe, Magnaflow exhaust, Perrin drop in filter, and a Bullwinkle road tune. This was also an awesome example of why I need to upgrade the turbo. At 3500 I am running 20lbs and by the time I get to 7000 it's almost 12lbs.
Thats because they are in shootout mode, aka Dynojet corrected numbers. My guess is OP made about 240/280 Real DD numbers.
That's more like it I had my 18G protuned with AP at 18psi by Shane and it only made 245whp/25x tq. So, when I saw your numbers I was pretty impressed.