I am sure that when the S5 was released there was a comment from MMC saying the always wanted the Aero to look like the S5. Although that could just be sales talk.

Back to the plot though:
I have the link on the AR page for the Supersport parts and it has the schematic for the standard exhaust. There doesn't seem to be one for the the side pipes.

https://www.aero-racing.co.uk/partsbooks/supersports/exhaust_system_standard.htm

From the link my basic understanding is that the side pipes delete everything from 4 back. Does anyone know if this is correct?

If it is, then it is little surprise that they are so loud having lost a silencer. In order to maintain the position there are 2 solutions to hit 86dB:
1) Massively improve #3
2) Replace #2 with a bespoke fairly narrow silencer

Anyone with any thoughts on that?
Or have the schematic for the side pipes?
Or pictures of the system?

My race car has a custom exhaust from Zero - so I may speak with them if modification can be made

2010 Aero Supersport | 2017 VW Multivan | 1996 BMW M3 Evo