Here is some pics of my CAI tube mod. I used a K&N CAI kit that I bought for a '09 chevy 1500 with 5.3. When installed on that truck, the check engine light would stay on. K&N told me to NOT use it. I got a refund and they let me keep the kit. I was supposed to damage it so it could not be used, but never did. My bad!
This is the stock intake box. Still looks the same, except for the sticker.
This is inside the of the stock box. I used a hole saw, and cut a nice round hole, and inserted this peice from the chevy kit.
If you can see it, there is a rubber hose connector with two hose clamps holding the tube to that piece from the pic above. You also see the air flow sensor port that I blocked off so to only get air from the bottom.
Here is the bottom of the tube. It comes out in front of the tire behind the wheel well cover. The crankcase vent was blocked off too. I cut the tube where it would be square with everything.
Once I did this, the sluggishness went away, and had more pep.
Thanks for looking.