This Audi S4 from TurboArt have been managed to pull more than 700 hp out. The TurboArt Audi S4 has been rebuilt as a B5 Audi RS4 and had its weight reduced to 1,513 kilograms. To put all those horse on the ground the TurboArt Audi S4 uses a Bilstein B16 PSS9 suspension, BBS CH [...]