Been thinking about making my own kit for a couple weeks now.. got it done yesterday. Cost me ~$75 and $50 of that was from the K&N air filter.
Here's how you do it:
First remove the sensor.
Then loosen these two clamps and remove the tubing.
Next remove this 10mm bolt.
After that bolt is out you can remove the air box, to do this lift UP and then pull it towards the front of the truck.
Here are the parts you will need. 3" tubing (I used PVC pipe with some spray paint made for plastic), 3" rubber coupler, and a 3" 90 degree rubber elbow coupler.
I cut my tubing down to ~8.25 inches, I would say anywhere from that to 9" should be good. I would recommend 8.5"
next you need to drill out a 1/2" - 5/8" hole in the side of the rubber elbow for the sensor. To remove the sensor from the air box just twist and pull.
Should end up with something like this.
Put it all together and this is what you get.. I think for less then $100 its not too bad
What you guys think?