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rjbevan
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| Posted: May 25 2010 at 7:36pm | IP Logged
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The guy at the parts store swears I'll see a huge difference in mpg if I change over to a K&N. Does anyone have any experience re: the difference in either performance or mpg? They sure are expensive.
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frontierguy
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| Posted: May 25 2010 at 8:37pm | IP Logged
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As mentioned many times, they flow a lot air along with a lot of dirt. OK for race applications where longevity and MAFS are not a concern. Better off sticking to the GENUINE NISSAN OIL IMPREGNATED AIR FILTER. Do a search on the K+N, you should find the test this guy did to determine just how much dirt gets by them.
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Jimmy54
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| Posted: May 26 2010 at 6:09am | IP Logged
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I agree, I tried a K&N once, I did not notice mpg or performance gains.
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jgreenjr
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| Posted: May 29 2010 at 9:04pm | IP Logged
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I agree with others
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kcidmil
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| Posted: May 29 2010 at 10:43pm | IP Logged
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I've known a few people to have problems running K&N. the oil in them can coat your MAF and cause all sorts of interesting problems.
I stick with AEM's dry filter for my truck, stock filters for my jeep and wife's car. A majority of trophy trucks now use AEMs brute force intakes.
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Boomer
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| Posted: Jun 01 2010 at 5:53am | IP Logged
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Add me to the list of people who would not run a K&N filter. Good OEM paper is your very best bet.
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my02blkfrontier
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| Posted: Jun 16 2010 at 11:49pm | IP Logged
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I have not noticed an increase in mpg. maybe a slight bit in performance.
However, ever sense i installed mine there is this wierd air sound that kinda sounds like a vaccum maybe? usually at idle or just barley enough throtle to keep speed constant, or when i turn the wheel at idle.
Anyone heard of this? or had the same problem?
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Jimmy54
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| Posted: Jun 17 2010 at 6:17am | IP Logged
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Most likely you are just hearing the air flow going thru the filter, they sound
kind of weird.
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kcidmil
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| Posted: Jun 17 2010 at 6:22pm | IP Logged
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Yep, the increased airflow causes more noise. Replace the stock air tube with a mandrel bent pipe and you'll really hear it.
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m8kitrun
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| Posted: Jul 10 2010 at 2:28am | IP Logged
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beware of cold air intakes. they may actually hurt your vehicle as the K&N did on my '10 frontier 4.0. i LOST almost 1 mpg and it feels like i downshift sooner on hill pulls. i have taken mine off and am back to normal. i actually read a very interesting article on why this happens in a sport tuning magazine (i think it was the may issue). worth checking out. something about "swirling" the air around the maf sensor.
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Nissan Frontier Forums : General
Topic: K&N Air Filter for 3.3L Frontier
