Mercedes-Benz's 5.5-liter twin-turbocharged V-8 is a relative newcomer to the automaker's powertrain portfolio, but that isn't stopping noted tuner Brabus from having its way with the forced-induction ...

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Last year Mercedes-Benz started replacing its naturally-aspirated 5.5-liter V-8 engine in high-end models like the CL550 with a more powerful, yet more efficient, twin-turbocharged 4.6-liter unit. The ...