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Pushrods and overhead valves or dual overhead cams; naturally aspirated, turbocharged or supercharged; it simply doesn't matter – there's nothing quite like the sound of a powerful V8 engine. Or is there? The engineers from BMW have been known to make some beautifully melodic powerplants ...
BMW sound engineer Manuel Reichle and the 635d – Click above for high-res image galleryWhen considering how to go about improving fuel efficiency and reducing emissions, we typically think of smaller engines, alternative fuels and electrification. One area that doesn't typically come to ...