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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
I read a post on this a while back. Everything said is correct about the K&N and the KKM. K&N pays to have thier system emissions legal, which in turn gets passed on to the consumer. KKM has practically the same filter, I might say even a better filter, but it is cheaper because it is not emissions legal. Swaping the OEM airbox is not that hard, and to me is worth the savings in money to only have to do it once every 2 years.