It was over a year ago when I did the sound for Microsoft using my CAV GT40. We chained it down to the dyno and put 8 microphones on it, two of which were right on the 48 ida's. It was really cool to see the fuel reversion rise into the microphones. I don't think they were counting on that. I don't know if they used this sound check for the Forza 4 game or not. It was implied that it would. I can't wait to get it and check it out.