How The Volkswagen Dirty Diesel ‘Flow Straightener’ Really Works

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Volkswagen announced a fix for some of its diesel engines in Europe last week that included fitting a “flow straightener” device to their 1.6-liter engines. The device provides something tangible for Volkswagen to trot out, but has been criticized for being a low-tech distraction from the actual fix. The “flow transformer” serves a purpose to […]