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Ford Explorer Community - Maintenance - Modifications - Performance Upgrades - Problem Solving - Off-Road - Street
Explorer Forum Covers the Explorer ST, Explorer Sport, Explorer Sport Trac, Lincoln Aviator, Mercury Mountaineer, Mazda Navajo, Ford Ranger, Mazda Pickups, and the Ford Aerostar
don't know what the emissions regulations are in WA, but the kkm isn't CARB certified. just something to note... a lot of people have them, and just replace them with the stock housing when it comes time for smog check time.
on the other hand, k&n is CARB certified. that's basically what you're spending the additional cash on, the certification.
For the 94 and earlier the KKM should provide a little more performance because it does away with the restricted inlet of the stock air box. I've never tested to see which one really does better but seat of the pants testing goes to the KKM, this is probably because of all the noise it makes gives the feeling of more speed.
On the other hand the KKM sits in a really bad spot under the hood and since it is an open element filter it pulls a lot of hot air in, the stock intake box at least has provisions for pulling cool air in from the front of the vehicle.
For the best of both worlds you would be better off designing your own intake that is free flowing and mounted in a location where it can pull cool air. The choice is yours.
The KKM is one of the most inexpensive, but highest performance yielding mods you can make. I haven't noticed nearly the difference in driving from ANY mod compared to the instant, noticeable difference with the KKM.
But the interesting point is made by TDG. A friend of mine did his own heat shield/cold air induction (I've seen the cold air on this site as well). My friend's website is www.members.tripod.com/gamby123
He's got good step by step instructions for how he did both. With the KKM, you should most definitely have cold (or cooler) air going into it than the hot air being emitted from the engine if you want to see some true in\mprovement. If I get the entire project done this weekend, I'll get some pics up.
There goes this weekend...
Karl