O.CT Tuning has released an aftermarket program for the Audi RS6 Avant which includes a significant power boost. When you have a car with a standard output of 560 HP (412 kW) and 700
Nm (516 lb-ft) there's very little motivation to resort to a tuning
company for a power hike but this hasn't stopped O.CT Tuning to bump the
horsepower figure to 680 HP (500 kW) and torque to 880 Nm (649 lb-ft).
This was possible by remapping the engine's ECU and also installing a
sports exhaust system.
The stock car sprints to 62 mph (100 km/h) in 3.9 seconds while the
tuned version slashes 0.5 seconds from that time and can reach an
electronically-capped speed of more than 200 mph (322 km/h) when
equipped with special tires.
Source: O.CT Tuning