After installing my turbo kit,my car is so much more quieter.I got a stock cat.,and the apexi n1 catback exhaust.I just want to know how i can get my car louder like it used to be.I hear like an eclipse and a wrx with turbo and they are loud like mine used to be.I just wonder how i can increase the sound in my exhaust,mainly to make it deeper.Would a test pipe?Or a 3'' pipe replacing my catback piping now?Any help is appreciated,.thanks.Jesse