E90 320i 2006(first timer)

[anton3y]

Hi i was hoping if anyone could give me some advice and possibly prices on any performance upgrades i could make to my bmw. I know i can't really expect much out of s non turbo motor 4cl but i would really like to get a bit of a performance increase even if its a small increase. Don't really have money for a better car. Thanks in advance.[/size]