Well let's see here..
since my pull of 293fwhp I have put on a smaller pulley, removed the main cat and the precats, installed a larger K&N X-Stream filter, had the chip recalibrated and changed the FMU ratio for the smaller pulley.
The only thing that would keep it from consistantly putting down 300fwhp pulls are the plugs and weather conditions (such as high heat & humidity) since the car is not intercooled.
-Mark