I have a stock 1998 xr250r with the baffle and snorkel removed. It also has a uni aftermarket filter. I would really like to race the bike in an upcoming 85 mile enduro but it has to be under 98 dB to be used in the race. Does anyone have experience/knowledge pertaining to this? I only know it must be below 98 decibel;s, not sure what distance. It is in WA. Thanks!