Sounds like you have a real animal now, wow! when is the next upgrade. Go for 450 hp to wheels, wooohooo!!! You better start saving up for a new motor, lol.

I would like to see you install one of the G-Tech meters, I think they are very accurate for dyno and 0-60 numbers, most likely the G-tech is more accurate than SI's wheel dyno. They are only $200, you could easily spend more money on chassis dyno sessions.