The aftermarket world is paying more and more attention to the Mercedes SLS AMG and the German supercar has recently receive a new performance package, one that comes from HMS Tuning. The 6.2-liter V8 engine has dropped the natural aspiration in favor of the tuning company’s Xtra Power Supercharger. The powerplant was also gifted with a new oil pump, intake manifold, a high-performance air filter, a fresh exhaust system that all... [...]Source: autoevolution