bluelines:
Gauss:

The question is B4T or B6T? I assume the latter.

or a (far-fetched) muted N/A with particle filter?

Yep, that is the sound of those 2nd batch GT3 RS with filter....

Smiley

Smiley 


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RC (Germany) - Rennteam Editor Porsche 991.2 Carrera GTS Cabriolet (2018), Porsche Cayenne S Diesel (2017), Audi R8 V10 Plus (2016), Mini JCW (2015)