Originally Posted by M3_wannabe
yea for my car exhaust is just about sound preference because performance gains are shitty with these n/a little v6 motors :/
Ok, 3.0 liter sixers or not really little and maybe you should have a heart to heart with your car, BMW does not make a V6. It is an inline six, that is what makes them so smooth and more powerful than many competitors compatible displacement engines.
As of sound, you will not make one car sound like another. For the money, get the PE, 1k buys a 7% power gain and a nice note. Personally, I think the separated quad exhaust looks ricy on a bimmer, kind of like an M3 with a wide butt.