Got the original idea from a guy on JeepForum, so i can't take full credit, but i made my own modifications to suite my application.

I used 3" Inside Diameter PVC

I used (2) sharp 90* "street" bend pipes - they have a female end and a male end on the same pipe bend.
I needed about 6" of straight pipe - Home Depot had 2' sections cut.

For the cowl attachement i grabbed another stock air tube from the JY, and cut one end off. It fit perfectly inside the 3" pvc. I made a 3" hole in the cowl using a drill bit many times, knocked out the circle, and cleaned up the edges with an abrasive cylinder for my dremel.

I mounted the airbox inlet higher than i would have liked, partly on accident, but it worked out fine - i just trimmed some of the air filter above the pipe so it would fit.
I used black RTV to seal it up.

I used the blocking piece that is normally in front of the airbox inlet on the front clip support as the cover for the inlet - worked great and i didn't have to buy flat PVC/plastic. Again i used Black RTV to seal and 2 self tapping sheet metal screws to hold the piece in place.

Then i took it on it's maiden voyage

Worked VERY well - lot's of power, no issues, kept the air filter nice and dry while fording lots of mud lakes.

 

that looks freaking sweet man im going to do this mod to mine i like it how far into the cowl does the tube go or did u just butt it to the cowl itself

 

about 1/4". The part of the intake tube that normally sits over the outlet for the air box with the snap ring is the part that is inserted into the cowl. The notch is perfect - fits very tight - no need to seal.

 

thats awesome

 

x2 on the awesomeness

 

any outside pics?

 

outside? it doesn't go outside that's the point. It sucks air through the wiper cowl.

It's a sleeper mudding machine

 

ah ok! i was thinkin that in the back of my head..... nice! i like that idea cause who goes above their windshield in water?

 

Very cool.. I like that.. Nice clean work!!

 

Mines like that, no issues in 7 years.

 

Did you get the ideal from Eric's XJ? That dude has built himself a sick rig!

 

If Im reading/understanding yours correctly you just have open pipe in the cowl and use the stock filter?

 

Very clever set up. Might consider this on my rig in the future.

 

That's correct, i just effectively moved the air intake from one side of the airbox to the other, and extended it

 

very nice. Ill steal this idea sometime this winter