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Wait so a screw somewhere in the exhaust is loose? And if I'm not mistaken the valves on the new G80/G82 are integrated within the muffler meaning they can't be unplugged to keep them open. I could be wrong but from all the videos so far on the car couldn't see any valve motors and can hear some open and close instantly whenever revved. Similar design to benz/audi. Keep us updated on the recall!
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