Vigge has never shown his wheel horsepower numbers as far as I know. His car has a custom MapTun ECU, upgraded intercooler, full exhaust, and BSR intake IIRC.
His peak flow values aren't any higher. That doesn't mean he can't make more power, and he certainly makes MUCH more torque since his MAF values in midrainge are much better. But I just can't figure out where the extra hp is coming from at top end. To make power you need airflow. It just isn't getting any more at peak flow.
Gonna work on some video runs. I'm getting a lock of flack for even suggesting that my airflow has anything to do with horsepower over on SaabScene. Strangely, it's always people who've spent lots of money on upgrades who are most upset by it. Go figure?