The '06 has a lot of differences compared to the older cars ... DBW, VSA, TCS, etc. It'll be a while before the aftermarket figures out parts for it.

Other than superchargers and turbos, you can't make much power with your typical bolt-on parts.

The car is very balanced in all aspects from the factory. My advice would be to just leave it alone and enjoy it as-is. Spend your money on track days and HPDEs and learn to become a better driver.