cooked it! What did I do wrong?

Got this from the guy with the insanely fast Dart on the Turbo forums....
"The engine used to be 7.7:1, but after talking to Don Bailey about it he convinced me to bump it to 9+ after I broke my crank couple years ago. Now it makes more HP and torque per lb of boost and still runs on pump gas. Having low compression leaves too much on the table and after switching proves it."
I think he is making 1400+rwhp/1100rwtq@13,5 lbs of boost pm 94 Octane.
[ame="http://www.youtube.com/watch?v=oRBC7cZ-JiU&feature=player_embedded"]Matts turbo dart - YouTube[/ame]
All that being said I would be guessing it was something in your tune.....