I did a test on the dyno yesterday to verify our problem. Commanded timing 16* pulled back to 9* at 6000 RPM result was 507 HP. took an extra IAT 2 sensor an plugged it in to the harness in free air...No timing was pulled result 672HP. left it that was to finish dialing in the car. 769 hp right now and still going, but I can't deliver this car this way. It has been converted to a Kennebell and they run 170f-200f with 16-20 psi boost. Heres a little clip from yesterday when we were chasing belt tension issues.
http://www.youtube.com/watch?v=aXjNSGfc7d4