Greetings from a "newbie" to this site. Just bought a '94 530i 5 speed, 130k miles. Getting ready to hack off the cat-conv (please, no environmentalist rantings & ravings, thanks)... was wondering if anyone has tried a generic (read:inexpensive) aftermarket muffler for a bit more muscular sound, but not something too raucous or obnoxious? Any replies about tone quality, hp boosts etc. welcomed. Thanks!