Watch an Audi RS4 with a Twin-Turbo 4.2 L V8 Drift and Reach 208 mph on Ice This very powerful Audi RS4 B5 was built by Mazhar Iqbal. He replaced the factory twin-turbo V6 engine with a twin-turbo 4.2 L Audi V8 estimated to make 1,300+ hp and 1,500+ Nm (1106 lb-ft) of torque...