Check this out, guys:

http://www.ebay.com/itm/Jeep-Intake-Supercharger-Kit-Turbo-Chip-Performance-/271232075083?pt=Motors_Car_Truck_Parts_Accessories&fits=Year%3A1999%7CModel%3ACherokee&hash=item3f26b1054b&vxp=mtr
Watch the video near the end of the listing. They install it on a high-output XJ.

Have any of you ever tried one of these? Looks pretty cool, but I'd like to see some numbers of actual gains.

Snake oil.

Just get a leaf blower & call it done.

just for giggles....

So, what did we learn? $1600 for 20 HP- NOT worth it.

What does the part you're looking to buy cost? I bet you'll be getting 1/2 a HP for the money.

Didn't say I was looking to buy it lol...

Cool video, man. I figured they wouldn't do much for air compression.

Hahaha! I just watched the second video posted. Funny stuff, man.

I watched a video about them they hooked it up to a car and ran it on a Dyno the car actually lost HP lol

Leafblower wins. Don't forget a blowoff valve!

Sorry, you are right & I was wrong........you would get 2.125 HP.

Still not worth it.

I have this really nice bridge you should take a look at...

It might add HP to a 5hp Briggs and Stratton :P