I just purchased a 2004 WRX (automatic tranny) last week. It is my daily driver, but would still like to make it a little quicker. I am fairly new to subaru's and do not know where to start. I was thinking of maybe starting with an up-pipe kit, cold air intake and exhaust but am not sure? I also do not want my car to be overly loud. Any help would be greatly appreciated? Thanks for the help!