BMW328CI

Cheers everyone! That's a little more than I was thinking aha :/ does anyone know how much is an exhaust that sounds bit more throaty and does not decrease my hp or increase my fuel consumption! Here is a link to what I would like it to sound like! but with an exhaust haha http://www.youtube.com/watch?feature=player_detailpage&v=Xc2D88Ul8Ks T

Hey new to this forum.... am thinking of supercharging my Bmw 328ci 1999 e46. Wondering if anyone knows how much is cost for the supercharger and to be installed? also what eles would need to be done to the engine if anything? cheers