ABT Sportsline knows that S6 owners have an inferiority complex due to the existence of the RS6. That’s why it just unveiled a new tuning package designed to make the little wagon just as powerful as its big brother. The new ABT Engine Control unit pushes the S6’s power output to 550 horses and 501 lb-ft of torque. That’s a lot of power, 100 horses over stock, but it’s still 10 horsepower short of a stock RS6. However, it is good for a top speed of 180 mph.
