I have a 2008 A6 3.2L Quattro, and am looking for some horsepower gains. Any suggestions?

 

There aren't any material horsepower improvements available. Just accept it for what it is. If you want to make handling improvements you could swap out the rear sway bar and throw a set of Koni FSDs on it. You could also go with season dedicated tires.

 

Thanks for your input. Doing fine in the handling department...