Quote:
Originally Posted by MBMW
Tried that same issue the sound is coming from one side went to the dealer to check and realized that this is normal at idle only one turbo works second spools when the engine is under load. BS? Maybe but I rechecked everything all is correct no leakage in the right exhaust
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this is correct. There's a vacuum that then allows additional exhaust gas to exit the 2nd muffler when there is more load.
This is also same reason why your exhaust flaps are closed at idle.