I was wondering if any one has some type of expericence with the Racing Beat presilencer. I have a GT35R with a 3inch down pipe to a borla mid muffler to a magnaflow muffler. I was thinking of replacing the borla mid muffer with the presilencer. Im getting pulld over to many times, also I cant have a conversation in my car with out yelling...

http://racingbeat.com/FRmazda3.htm

Thats the presilencer from racing beat...

 

you should get a butterfly valve that will open and close on command, that way it will quiet the exhaust and if you want, it would allow for unrestricted exhaust flow.