Hello! I would have a question for the exhaust professionals among you: And I would like to know if there is anything to do with switching 2 silencers into series production? I know that this is accompanied by a noise reduction, but the question is whether this is actually effective? Specifically, this would be interesting for me with motorcycles. Especially with the newer models, instead of the heavy cat rel., one could simply switch a silencer into series production to the ESD(s). I know that this may sound a bit stupid, but the idea would be to replace the original ESD(s) from design and not from sound reasons with fische Zubehör-ESD(s) and then to install a silencer instead of the cat, in order to clearly undercut the noise level of the original system. Does anyone have experience with two silencers in series? Is this greatly reducing the volume and what happens frequencywise? ? (Will the low frequencies be eliminated well?) Or can the machine only be made noticeably quieter by means of a more effective ESD? [Remark on the low frequencies: I assume that these are the more critical at long distances, because when I think of Motocross machines, one can hear only the dull paws of the 4Ter at a distance]