Audi’s Clever Twin-Turbo Trick – Sequential Exhaust Valves!
From Engineering Explained. Intake valves dipped in gold?! While it sounds cool, those are actually exhaust valves, and… they’re just highlighted in yellow. But you might notice something strange: only the yellow valves open up to release the exhaust gases – a clever strategy Audi has implemented for their twin-turbo V8 engine. You see, at…







































