you can attend any of the msv track days for a "free noise test" on a track day they are holding

so find a track near you thats having a day your free and go get it checked before booking, i read chip's comments before that if you think its loud it most likely is over, very strict!

depends what exhaust you are running too, but my mk3 escort that had twin 40s and full janspeed manifold and system and revved to 8k was alot quieter than cars that were passing at castle coombe.