I happen to be a fairly new owner of a 2005 Denali. Now that i am finished with the mods i'm doing to my Camaro i need to start getting things together for my "Groecery Getter". Got my Cat Back in the shed and looking for headers and CAI so i can get my tune done all at the same time. Headers are easy enough to pilfer through but i keep finding loads of "I like" or I'm happy with" about CAI's. Has anyone put up some numbers or are they so minor that the "swiss cheese" and a K&N is all i need? Not looking to blow a huge load on a CAI due to the supercharger my yearly bonus will be buying in the spring of 2012 but i do want something to carry me til then. I also need to keep this thing drivable so i can use it to haul my 'Maro. If y'all don't mind throw me some info please.