Wolfgang
Kraftwagen König
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^ Agreed. Those are powered by the M 279 Mike recently described thusly: 
Mercedes-AMG 6.0L V12 biturbo engine with new technology. The Mercedes-AMG 6.0L V12 biturbo engine with the designation M279 is based on the M275 engine used previously and has been comprehensively revised. New exhaust gas turbochargers with an increased spiral cross-section, new manifolds and wastegate ducts with optimized flow characteristics increase the engine output by 18HP. The multi-spark ignition with twelve double ignition coils not only results in smoother running, but also enables even more effective combustion in combination with a new engine management system with higher performance and optimized cylinder heads. The resulting reduction in exhaust emissions is also due to a large extent to the optimized catalytic converter system. The newly developed Mercedes-AMG sports exhaust system, which has a pipe layout with enhanced flow characteristics, is 3.2 kilograms lighter as a result of a reduction in the wall thickness. But it is not just the inner qualities of the Mercedes-AMG 6.0L V12 biturbo engine that impress. The powerplant's looks are as inspiring as its performance: the high-quality carbon-fiber and aluminum engine cover reflects the exceptional character of the powerful V12 biturbo unit. Mercedes-AMG M279 V12 biturbo engine 6.0L 612-630HP and 1000Nm of Torque. Handcrafted by Michael Kübler @f1mike28 in Germany Affalterbach. Driving Performance is our Passion!