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-   -   DIY Jr. CAI for under $100 - Guide with pics (http://www.ramforumz.com/showthread.php?t=74933)

KRAZYK 02-20-2011 05:22 PM

DIY Jr. CAI for under $100 - Guide with pics
 
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:


http://i188.photobucket.com/albums/z...y/IMG_0754.jpg
First remove the sensor.

http://i188.photobucket.com/albums/z...y/IMG_0755.jpg
Then loosen these two clamps and remove the tubing.

http://i188.photobucket.com/albums/z...y/IMG_0757.jpg
Next remove this 10mm bolt.

http://i188.photobucket.com/albums/z...y/IMG_0758.jpg
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.

http://i188.photobucket.com/albums/z...y/IMG_0759.jpg
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.

http://i188.photobucket.com/albums/z...y/IMG_0760.jpg
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"

http://i188.photobucket.com/albums/z...y/IMG_0761.jpg
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.

http://i188.photobucket.com/albums/z...y/IMG_0762.jpg
Should end up with something like this.

http://i188.photobucket.com/albums/z...y/IMG_0763.jpg
Put it all together and this is what you get.. I think for less then $100 its not too bad :smileup:

What you guys think?

SslagleZ28 02-20-2011 05:27 PM

Looks good. Bet it flows better than that stupid accordion style tube we get stock.

KRAZYK 02-20-2011 06:34 PM

Quote:

Originally Posted by SslagleZ28 (Post 449426)
Looks good. Bet it flows better than that stupid accordion style tube we get stock.

ya and the air box I removed restricts alot of air flow also.

BigOrange 02-20-2011 07:15 PM

Looks good man! It'll def. flow better then that resonator hat. You should notice a bit better throttle response as well :)

r1500w2004 02-20-2011 08:57 PM

Did You get the rubber couplers from the same place as the PVC tube?

ramSpoons 02-20-2011 08:59 PM

thats pretty cool. i been looking in to getting a jr. kit but didnt want to shell out the cash. now i have an idea of how to do it.

r1500w2004 02-20-2011 09:07 PM

And is the rubber elbow thick enough so it dose not collapse on hard acceleration?

snrusnak 02-20-2011 11:57 PM

Very nice, good to see people coming up with budget minded ways to help with performance, that are nicely done! This should be quite effective. I am looking to do something similar, but I was planning on bending the pvc instead of using a rubber elbow, one question for you though, do all the couplers fit snug?

Appaloosa 02-21-2011 12:02 AM

Right on!!! A few of us would like to know where you got your parts so we can try it too.

GPSHSLAX 02-21-2011 07:48 AM

That looks great. I have never seen a rubber elbow before. Also great write up, you took all the pics I forgot to take when I did mine.

:rep:


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