Well, unfortunately a lot of 2011 owners are waiting for DS to put out the Predator and Trinity for that year Ram. As you probably would agree, the wait will be worth it. They also have a new product in the works that sounds very interesting.
So, TWO Tuning options would be - The DS Predator and The DS Trinity.
TWO CAI options - There are soooooo many CAI's out there. Root Beer (Brian) did a good job of comparing CAI's and you can read that info here:
I have an AFE Stage 1 on my truck and love it. I've used open cone filter types, such as the K&N and S&B units, plus closed box units such as the Volant CAI.
So, you have a lot of choices. In my view, most CAI's provide pretty much the same results. Some are better built than others. Flow numbers do not necessarily dictate quality and your engine will only use so much air. Beware of the cheapy ones that will come apart on you and you end up with filter media in your engine!