i bought my 05 silver sti about 4 months ago. just thought i'd join and do a little learning about the car. i've already installed hks catback, injen cai, eibach sportline, and 18" enkei rz5 on it. i'm shooting for 500+ hp. thats my goal. if there's anything you think i should know, or have any pointer of any kind, i would appreciate the input.