The German tuner has revealed an updated aftermarket package for the Mercedes-Benz
SLS AMG, following last year's "Silverstar" project. Initial performance upgrades boosted the stock 6.2-liter V8's output from 571 horsepower and 479 pound-feet of torque to 635hp and 524 lb-ft, as a result of a remapped ECU, a stainless-steel exhaust with sports catalyst, and special sport air filters. Wheelsandmore
's latest Stage III upgrade adds a supercharger, which helps up output to 704 hp and 631 lb-ft of torque.