I agree...the 122 will require a lot of extra items, a custom tune and they really only recommend it on a built bottom end. The 112 will be perfect for you if you think you are not going to heavily modify the truck down the road. But, if you are just looking for simple bolt on power the 112 is the way to go. The tune will work well out the box so no custom tuning is needed. And lets just say you did want more power down the road you can always run more boost and even custom tune it.