does anyone know how quiet this setup is? i searched and found a guy who sed it was "quiet" with a dp, but how quiet is quiet? like borla hush or what? if anyone could help me out thatd be great. i have a dp too and im looking for sumthin thatll give me better gains than oem sti, give me a little sound, but not be too loud and noticable for the cops. thanks in advance.