i just had my test, it came in at 94db but i wasnt very happy with the way the test was carried out considering it was a busy road and on the other side of that road was a tyre shop making alot of noise, and i had to pay $38 for something that took this guy under 5 mins to do the whole test. he was a very rude guy.
i think its near impossible to have a fast car and have the sound under 90db with these engines, i think they test them up to high in the rev range, the amount of times im that high is very rare im usually in traffic and you can barely hear mine. i can come home at night and not wake up my mum which is saying something cause she is a light sleeper lol.