I have this filter on my car and it works great, when I go to clean it every 12k miles there isn't any dirt on the inside of the filter. It sounded great before I put exhaust on my car. I think it was well worth the investment.
EDIT: i've never had any issues with the dealer servicing my car or with my engine. Just maintain your vehicle properly and you will be fine.
Update: Well I got 20 mpg on my way to St. George, UT last weekend. That was completely loaded down (passengers and luggage) and going 80mph. I was getting 19 - 20 (with lift and oversized tires) before installing the intake and that was with no one else in the Jeep and no luggage. So not a huge gain, but meh. I still love the sound and it still feels more responsive, especially at lower rpms. In hindsight if I were to consider buying this intake with what I know now I still probably would, but there might be a few other things I would spend the $250 on first. Having said that I'm really glad I have it and I would hate to go back to stock.
1. Don't expect a big difference in mpg.
2. I still think it has more power than before but I don't have dyno numbers to support this.
3. It definitely is more responsive.
4. Love the sound.
5. Looks great under the hood.
6. Warranty wise my dealer has no problem with it, but some may.
Honestly, I would buy a downpipe for my Turbo Cobalt. Lol. If I were to spend it on my Jeep I would probably get skid plates.
2008 Sport Liberty
Cold air intake*Trush (magnaflow) turbo muffler* Hypertech power program*
Hood Prop mod. Battery Quick Release mod.
Resonator removed (sounds like a V8 on start up)
I love all of the talk about voiding warranty on this thred. I guess it would be a concern if you aren't doing anything other than the filter. In my case, if I bought my jeep new, my warranty would be gone almost immediately what with wanting to do a suspension lift, intake, exhaust, wheels, tires, etc...... I like the K&N FIPK's. Had them on all my vehicles from a 2001 Audi TT Quattro to a 2006 F150. In every case I definately saw increased throttle response, increase in acceleration and if I could keep my foot out of the vehicle an increase in gas milage. I have had many discussions with installers and shops and the warranty condition comes down to the question "did the aftermarket part cause the failure?" If it did then you are done. If not then in a court of law the warranty will be up-held.....Of course is it worth a court battle over? probably not so you could be done anyway. LOL My opinion - If you are looking for something fun to add, as most of us are, then its a great buy. If you are looking to do it because you are hoping for some miracle cure to gas milage.....the Honda Prius might be a better answer.
Reading these posts, owning a vehicle like myself that's under warranty and plan to keep it well past it's warranty, then just do the mods. In the meantime, instead of cherry picking like just doing a filter, a chip, a pipe, just save your money do it all at once.
On a side note on NetFlix saw a movie called Gashole anyone else see it? It's a documentary. If those mods they made on those cars in the 50's are legit and are patented I would love to get my hands them.
I hear all of this stuff about "oiled filters" but why would you want to buy a K&N when you can just buy a MOPAR CAI? it's a dry media filter so no worries about having to keep it re-oiled, its MOPAR so no worry about factory warrenty issues especially if you have the dealership install it, and it's a quick "rinse and reuse" to clean... am I missing somthing here?
We can't stop here!... this is Bat Country!
The only thing I found out is that you have to be cautious of your kk stalling. This only happens if you come to a sudden stop while driving. I was talking with a tech when I was getting my winter tune up and he said that since so much air is now going through the throttle body, that when it closes, air is still going into the engine and chokes the engine. But this is the only problem I've found so far.
2008 Liberty Sport - Chrome Grill, K&N CAI,