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German tuner, Brabus, has been tuning Mercedes models for quite awhile, so getting a slew of performance kits to slap onto different versions of the luxury brand is neither surprising nor unexpected. Their new PowerXtra CGI kits can be applied to the S550, the CL550, the S 63, and the CL 63 . Depending on the model, this new package can increase the total output for the Mercedes up to between 490 HP and 620 HP. The top speed has also been pumped up to an impressive 200 mph.
For the S550 and CL550, the new performance kit increases the V8’s output from a total of 435 HP to an impressive 490 HP and the peak torque gets raised to 575 lb-ft. The S63 and CL63 models will receive the same kit, but will also get a water-to-air intercooler powered by an electric auxiliary pump. This will increase the total output to 620 HP and the peak torque to 737 lb-ft. As a result, the sprint from 0 to 60 mph will be made in 4.3 seconds, while top speed has been increased to 200 mph.[...]

Source: topspeed