source: ABT  19 years ago, the first Audi RS 4 appeared on the scene and caused quite a stir with its 381 HP (280 kW)! The 4th generation of the sports station wagon is now available, with an impressive 450 HP (331 kW). The difference between the current production model and the new ABT version of the RS 4 is equally great: 510 HP (375 kW) and 680 Nm instead of 600 Nm should be more than enough even for the next generation of the fun, lightning-fast car. Speaking of torque: compa...