Unfortunately so, but as you're probably aware, noise testing is a very imprecise science and I've been refused track time at Goodwood on a completely stock Yamaha R1 before, despite it having the EU Type Approval plate showing an EU standard 78dB at their tested revs on the headstock. Tester insisted on 9,500rpm in neutral and the rattle off the valve gear was horrendous. I complained to the Head Marshall who agreed to a ride-by, which of course was almost silent.
Moreover, my Spider measured 94dB in June one year and supposedly 106dB on a return trip in August - same car, same exhaust, same testing place. 12dB increase is 4x the volume, yet Parkie still didn't care (nor understand sound physics), which was a shame. Fitted a simple Supertrapp discs pack and magically it then read 96dB. It's all smoke and mirrors I tell you.
Bottom line is always take things you can bolt onto the silencers on the day, unless you are willing to risk your entry fee on the vagaries of the moody and inaccurate noise testers.
/RANT=OFF
