Clemens,
A friend with a D-registered 411 here in Hamburg which has a similar engine has parking noise entered as 82 and driving 80 but he doesn't remember where he got the numbers. My 405 has 85/78 but I also don't remember where these numbers came from.
Another friend has a 409 and I can ask him.
All seems a bit hypothetical considering the current exhaust systems etc!
Regards
Richard
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