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My wife has a 2002 Durango with the 4.7. Really happy with it and it tow's really well. Used K & N air intake kits have been popping up here and there and I was wondering if they are worth buying for the performance and gas mileage? My other question is since I am in the midwest can I run it in the winter without any problem? Thanks in advance.....

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We had a Durango with the 4.7 and full time
4 WD. It sucked gas, 8 in town and 12 on the
freeway. But!, the best thing on icy roads.
I like the K&N filters, ran them on all the
drag cars. Little better ET with the K&N.
Never ran one on the Durango, but should of.
For $50-$60 can't go wrong. They do last
forever.

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Something that might be a big deal to your wife.My father-in-law has a F.I.P.K. air cleaner on his 03 dakota w/4.7, and there is a lot of intake noise. You can hear the difference with every little depression of the throttle.It sounds good at W.F.O. but at part throttle it's just a sucking,whistling sound that may annoy some drivers.

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but that's the sound of extra HP!

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I always kept mine oiled and cleaned it as soon as it started looking bad, usually when the red color from the oil started to fade out.

I used to always get a gummy brown film buildup on the throttle blades and around the top of the carburetor with the k&n filter. This goo was a mixture of dust getting past the filter and gasoline vapors. When I went to the paper filter that problem has almost gone away.

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gummy build up is probably from dust, and oil residue from your K&N filter, NOT from gasoline vapors--especially since cars have used multi-port injection instead of throttle body injection for quite some time now

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don't be suckered

if you check your intake air temperature sensor (IAT)
and manifold absolute pressure sensor (MAP)
just after the KN install
you will find very little gain
and more to the point
if you check IAT and MAP again
at about 2000 to 4000 miles
you will find even that small gain gone
as the small surface area of the KN has plugged up faster.

http://home.stny.rr.com/jbplock/ISO5011/SPICER.htm

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I always kept mine oiled and cleaned it as soon as it started looking bad, usually when the red color from the oil started to fade out.

I used to always get a gummy brown film buildup on the throttle blades and around the top of the carburetor with the k&n filter. This goo was a mixture of dust getting past the filter and gasoline vapors. When I went to the paper filter that problem has almost gone away.

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gummy build up is probably from dust, and oil residue from your K&N filter, NOT from gasoline vapors--especially since cars have used multi-port injection instead of throttle body injection for quite some time now

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I installed one in my 1997 Chrysler Concord 3.5L right after I bought the car new. I just got rid of it this year and it had 220,000 miles on the engine and it ran great, but the transmission was on its way out.

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