Some tracks have tight-ish limits. It was either Donnington or Mallory, I think but maybe wrong, that had noise complaints from neighbouring houses after new occupants moved in! It put a question as to whether they could actually stay open.
Near here Pembrey circuit is next to an RAF bombing range so take your pick! I have yet to see jets with extra baffles and the US ones are easily the loudest. When walking the dog in the adjacent forest I sometimes go to the track fence to view course activity if it sounds interesting. Pembrey airfield is also there. Over the last couple of years RAF have been landing transports on the beach too.
As for track days there are noise reducers you can fit to the exhaust ends that might help. If your system checks too loud then perhaps contacting tracks you might use to see what they can do to help.
Last edited by sospan; 09/04/21 01:46 PM.
