107dB is a ban at many tracks.
https://www.trackdays.co.uk/tracks/ Click on a track to see the limit for most of them.
Both the S2 with single sidepipes and Coupe with dual sidepipes have been black flaged. The Coupe is not often let out of the pit lane as you come out of the feeder compound.
They both passed the MOT which always makes me laugh. Quiet enough for public roads and late nights but too noisy for a RACE track. I do feel a little tiny bit sorry for the neighbours. Just a little.