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I used to be a huge beliver in K and N. While I think the filter itself is build well and they have their place in cold air intakes, etc. I think that you have to have the perfect oil content in the filter to get a good balance between airflow and filtration. Too much oil, restricted airflow, dirty MAF sensor, etc. Not enough oil, great airflow, not great filtration.
I am sticking with paper for now. Prices are high, but they should come down.
Oh, and on the two trucks I had KandN filters on, i noticed no increase in anything.
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1978 F250 Lariat 4x2
2008 Expedition Eddie Bauer 4x2
I've got the K&N drop in and noticed no increase in milage. I did however have no issues pulling a #5,500 30' travel trailer between Phoenix & SanDiego against the wind both ways!
i have the drop in K&N and have noticed better throttle response slightly. Plus it was $30 and the paper ones are close to $20 and are not readily available near me except at the dealership.
I have used K&N type filters in my last 3 cars/trucks and have never had an issue, and I usually keep my trucks to at least 100K.
Personally i wish someone would come out with a cold air intake so i can remove the crappy stock piping. Has anyone taken it off and looked at how restrictive it is. It is unbelievable.
I wonder? In my last truck 2004 yukon i put a drop in K&N and also had flowmaster dual exhaust and it made a huge difference in kiddy up and MPG.....I was just looking at the gibson dual exhaust and CAI from K&N.
KEEP THE PAPER FILTER, REPLACE OFTEN.
You will find little gains in all aspects.
KEEP PAPER FILTER, A tuner will problably serve you better.
arent you the guy who said dont modify your new truck on the 07 expedition lift thread?
You say to keep the paper filter and add a tuner, tuners void the warranty alot quicker than any suspension changes.
Plus there are no tuners available yet for the 07 expedition, I have already checked, plus if you do get a tuner you will need more air flow than that paper filter will ever give you.
__________________ Ken
"Socialism, like the ancient ideas from which it springs, confuses the distinction between government and society. As a result of this, every time we object to a thing being done by government, the socialist concludes that we object to its being done at all. " -The Law, Frédéric Bastiat, 1850
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K&N Air filter?
