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Old 11-25-2014, 02:05 PM   #1
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K&N filters

What is the popular opinion of the value of K&N filters? Worth the money?
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Old 11-25-2014, 02:28 PM   #2
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I've always put them in my vehicles pretty much immediately after purchase. I figure they're re-usable, so at some point they will pay for themselves that way. I generally keep my vehicles for a long time, and I live out in the country, so we have a lot of crap in the air. I still have the first recharge kit I ever bought, so they last quite a while.

Do they really make a difference in performance and HP? Meh, I dunno, maybe so. Dyno tests like you to think so, but I'm not sure I could feel it if they did. But I still think they're worth the money; they're really not that expensive.
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Old 11-25-2014, 03:02 PM   #3
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I live in dusty West Texas where paper or stock air filters should be replaced every 5000 miles. I installed my K&N at 30,000 miles. I now have 130,000 miles on the same filter so I can say it has definitely paid for itself. Just make sure you clean and treat it on a regular basis. It's a good idea to put the K&N decal on the air filter housing so, if you take your truck to a quick oil change place, they won't try to sell you a new filter along with everything else they say you need.
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Old 11-25-2014, 07:51 PM   #4
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Cotton/oil air filters (such as K&N) pass more air than paper filters. They also pass more dirt.

I use paper on everything I own.
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Old 11-26-2014, 09:13 AM   #5
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Properly oiled K&N styled filters filter better and let more air through.. When I traded my last truck I put the paper filter back in and found then that the new truck used the same part number so I have been using mine for 10 years now.. Knock the dirt out of it once every 3 months and clean it once a year.
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Old 11-26-2014, 05:07 PM   #6
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Quote:
Originally Posted by Seann45 View Post
Properly oiled K&N styled filters filter better...

Sorry, but that is simply not true. The tests have been done.
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Old 11-26-2014, 05:17 PM   #7
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It's very debatable. I have read tests that indicate it is not better. I bought one for my 7.3 diesel years ago when they were advertising better fuel economy. I saw no change.
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Old 11-26-2014, 05:26 PM   #8
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I made the decision long ago to stick with an OEM filter for my vehicles.

K&N vs OEM Filters
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Old 11-26-2014, 06:56 PM   #9
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A local manufacturer makes paper filters for several car and heavy truck companies. After touring the plant several times and seeing the research and quality control that goes into air and oil filters I would have a hard time believing an after market product could exceed their performance. I like to throw the trapped dirt away and start fresh.
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Old 11-26-2014, 06:57 PM   #10
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Quote:
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A local manufacturer makes paper filters for several car and heavy truck companies. After touring the plant several times and seeing the research and quality control that goes into air and oil filters I would have a hard time believing an after market product could exceed their performance. I like to throw the trapped dirt away and start fresh.

Me too.
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