I have been wondering the same thing myself. Aftermarket air filters are not exactially cheap. It would be nice to know which one worked best on the JK. I would like to get one, but would like to know which one to get. Make sense?
the differences are negligible. i went with brute force, just so i don't have to oil it when i clean it.
don't expect much from them; throttle response, a little noise, but rw hp is going to be minimal. coupling it with a bored TB and a less restrictive exhaust may net a little more.
also, in the JK's, the air is pulled from a dangerous location. keep your stock box for wheeling trips to help keep water out.
the differences arent that noticable between the brands. In a recent test by JP mag the oiled filters came out with a higher efficiency rating, but the difference was only a couple percent. I choose the "AIRAID" becuz of price and the heat shield that covered the bottom and three sides of the filter to protect from water spray.
__________________ -Jeep History-
1992 XJ - '00 till '04 - RIP (thanks alot dave)
1995 XJ - '03 till '07 - Sold to the HUB
I have the Airaid and like it so far. It does whine a little bit, sounds amazing, improved my MPG by 2mpg so far (only have 1600 miles on the JK), and there seems to be a power increase. I am going to add an exhaust soon to help the engine breathe more as well as the JET performance chip or something else that is out by the time I am ready.
I went with AFE. Mainly because I have one of their kits on my diesel truck. Plus the price was a little less than the others available when I got it. I will be adding a Unichip soon when it comes in. Will see if that combo does any good together.
00 Wrangler Sport 4.0L NV3550
4" RC LA full suspension system
Bilstein 5100 shocks all around
axles (30,8.8) with 4.88 gears ARB F/R
SYE and CV rear driveshaft from Drivelines NW
Currie HD steering (Thanks Savvy, Awesome customer service)
Savvy LED tail lights (Thanks again Savvy)
GY MT/R Kevlar 35x12.50x15 on 15x10 American Racing AR23
Bestop soft top with tinted windows
Smitty front and rear bumpers w/rear tire carrier
Smitty XRC8 winch w/synthetic rope
Smitty rear corners and rock sliders with step
Genrite aluminum 6" tube fenders front/rear
Dodge Durango steering box with Pure Jeep skid and M.O.R.E. steering brace
Ok, I don't have my JK yet (first one order was messed up by dealer two weeks ago -- so it's reordered), but I've ordered the Volant CAI. It has a better closed box system compared to the others, can be adapted to a snorkel (separate purchase), is more expensive, and CLAIMS HP/torque results. Still I agree with the others here that say the difference in performance between the systems is negligible.