Newbie.....just bought my cts vsport premium, looking for some basic performance mods. To my surprise I'm not having much luck finding anybody that makes a CAI??? What about a tune? My big thing with tunes is customer service...I've heard mixed things about the customer service with the Trifecta tune, but it sounds like a good product? Livernois has awesome customer service but I've heard their tune isn't as involved as Trifecta's? Any help???