There's a guy on AFM that has 497 in his Pro-Charged New Edge..
Having read this, I'm a little less worried about slapping the V2 on my car this month. John at Horsepower Ranch (local tuner, king of them all) was telling me we'd be able to push the 500 mark to the ground with my set up if I truly wanted, but thinking longevity, I'd settle for 425-450.
Very informative!