Nice looking and clean truck sir, glad you got one and also that you are on this site!! Keep up the questioning and also the mods!!
---------- Post added at 06:31 AM ---------- Previous post was at 06:03 AM ----------
I'd do at least these 3 first!! I didn't get anything out of just the CAI except a louder intake sound (which I didn't like much), then I bought my Corsa setup and that changed the intake sounds (which I liked) but didn't get much of a power/mpg increase either!! The tune is where I got the power/mpg increase, plus the shifting is amazing because of the tune which is what made it worth it to me!! Those 3 things are a very good starting point for pretty much any vehicle if you are after a power/mpg increase, don't expect alot in the mpg aspect of it all though, each vehicle is a whole different beast for the other!!
If you have the money, get yourself a Corsa Sport exhaust system, they sound awesome on our trucks!!! A bit louder at idle than stock, at cruising speed on the road/freeway it's just as quiet as stock (nice because you can hold a conversation without having to yell at each other unlike alot of other mufflers), and boy oh boy when you step on it you know you have a Corsa!! lol
As for CAI, you can do a K&N or others but if I had it to do over again I would have gotten one of the oil less ones (can't remember a brand off hand), alot easier to deal with than the oil covered K&N's. Not saying the K&N's are a pain, just the other is that much easier!!
As for the tune, I highly recommend the custom tunes like Black Bear or such!! Not a huge fan of the pre programmed handhelds, they are very general with their programming and not specific enough to a vehicles needs to get the most out of it!! My denali could smoke my buddy's silverado anyday of the week, both were 6.0's but mine was a BB tune while he had a diablo!! No competition at all!! When it comes to the custom tunes, be sure to get the ones that actually pull data from your truck so the tuner can analyse how your truck runs and can build a program for your truck that will optimize what you have, and if you can somehow have an inperson tune, even better!! Very cool experience!!