Audi V10 takes on Porsche flat-6 twin-turbo

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Here's another video to tantalize your eardrums. This time, we pit the Porsche to a 2010 Audi R8 5.2 to find out which engine melody gives us more chills. In this attack, the cars are evenly matched price, power and prestige-wise. In-house, we're torn between the V10 burble and the flat-6 warble. What do you guys like? Full story...