i agree stock turbos sound shithouse with a screamer pipe, a big external wastegate though venting to atmo sounds AWESOME but just in regards to the fines.. i recently went over the pits, no cat and screamer... nothing wrong.. and also my mate 04RNZ in an rx3... t66 high mount turbo, no intake pipe/filter, no mufflers, screamer pipe, went over the pits and was out as quick as he came in and nothin happened to him... i think nsw is a little tougher as i lived there, but still out of all the car enthusiasts i know, and deal through with work, i have never seen/heard a fine issued that big.... i do remember seeing a guy get done for excessive noise, but no EPA fines..also my bro inlaw just had his screamer pipe put on his rx7 and got pulled over, nothing came from that, and everything was fine...
ben...