There are plenty of reasons to leave the latest Mercedes-Benz CL 63 AMG untouched, but some folks out there are always open to improvements. Enter the world of German tuning firm Väth that has unleashed a new performance package for the Mercedes' facelifted coupe.
Väth starts with the V63S tuning kit that includes a software upgrade for the ECU bumping the bi-turbocharged V8's output from 536HP 590 lb-ft to a monstrous 630-horsepower and 686lb-ft (930Nm) of peak torque.
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