I have carried out the standard mod on the OEM stock exhaust by removing the front and rear baffles, kept the middle as original.

Pre mod had a couple of track days where the max DB level was less than 100db and passed OK

With the mod the exhaust noise has substantially increased. I don’t have a DB level meter to measure so how have you track day chaps got on when you have carried out the same mod?

Have you passed the DB test?