The GTI's are great little cars, and a fun daily driver. A GIAC ecu tune will net you about 50hp and up to 85ft/lbs of torque. I am not sure on the 06 flash, but our other VW flashes run $485. The manufacturers leave a lot of hp on the table with these newer turbo cars. I flashed an 02 Audi Allroad the other day, 80hp and 85ft/lbs of torque....in less than a half hour
Install some PSS9's on top of that, and all of a sudden you have a heck of a little car.