Audi S5 Cabriolet receives complete tuning from STaSIS
It's been a while since we lastly talked about the Audi S5 Cabriolet, especially about a tuning kit dedicated to the convertible version of the German manufacturer. Even so, the American specialists from STaSIS engineering released details on their newest tuning package which offers both aesthetic and performance upgrades. Called Challenge Edition, the tuning package comes with a black finish...