In case anyone was interested for future events, I attended the Silverstone track day yesterday which was a 102db drive by, 105db static limit day.
No static tests were done but I had no issues on drive by despite using all revs and all DPM modes. The bypass valves would have been open a lot.
It was a pretty cold and wet day which may have deadened some of the sound.
Being on the regular road MPS4 tyres was a good choice for the conditions and I managed to get round quickly and without issues.
More than can be said for some of the Citroen C1 racing teams that were testing in advance of their April 24hr race...I haven’t witnessed that many red flags in a day before for spun off cars (and subsequent grass and mud on the circuit). I’m glad the driver walked away unscathed from the one that he rolled coming out of Club onto the main straight 😳