AUDI S4 RACING WALLPAPER

Audi has just upgraded its S4 with a new package of performance.The upgrade is made by Audi in cooperation with STaSIS Engineering – a tuning house from America which has specialization to work on Audi and Volkswagen cars). StaSIS Engineering has advanced power-train, braking and suspension upgrades.The Audi S4 is available in two versions: Challenge Edition and Touring Edition. Previously,