Mostly from opinion, I hear that AEM CAI shows the best power gains. Is Injen just as good. I am thinking about getting a CAI but can't decide on what company to buy from. I sometimes think AEM is like Air Jordans when it comes to intakes and I am really just buying the name. Is everyone happy with AEM or is there others intakes out there that is just as good. I remember some Air Intake shootout in a magazine some time ago that compared them for the GSR, does anyone remember what the results where. Thanks for any replies. I guess I am just trying to warrant the purchase of a CAI when everything else on the car is stock. Thanks again!!