I made my own CIA for $55. 3.8L/Auto (Looks factory)
I was pissed at how much the aftermarket intakes cost so I made my own. All parts could be found at Autozone.
$25
Spectre air filter #8138
http://shop.advanceautoparts.com/wcs...8_pri_larg.jpg
$20
3" Spectre black flexible tubing #8741
Comes with 2 silicone couplers. I had extra 3" stainless steel worm clamps
http://ecx.images-amazon.com/images/...500_AA300_.jpg
http://inlinethumb59.webshots.com/46...600x600Q85.jpg
$10
Spectre 3" OD 4" long tube #8708 (I painted mine satin black)
http://ecx.images-amazon.com/images/...500_AA300_.jpg
I had to hack off the stock air box after the MAF sensor. To get as much as I could I cut is as close to the box as possible. Once cut I had at least a 1/2", but it wasn't round. I pulled out my torch and heated up the plastic and molded it round. then I was able to sand it down smoothly and shove it in the "3 OD tube. Then connected the flexible tubing and snaked it down exactly like the aftermarket systems do by the fog light. I made some mounting brackets for the air filter and I was done! I didn't take a pic of that though. No engine lights or nothing! I have a noticeable increase in throttle response and low end torque. I gained a few MPGs also!
http://i37.photobucket.com/albums/e7...ics/IMG296.jpg
http://i37.photobucket.com/albums/e7...ics/IMG297.jpg
Oh yea, I took off that baffle on the factory rubber tube and used a piece of plastic I cut and glued it to the hole and wrapped it in black electrical tape. No the tape doesn't get all sticky and nasty. It looks legit. I'm picky.