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Old 05-29-2016, 11:14 AM
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K&N Air Filter

Ive searched the forum for this thread or any posts with no success.

Anyone use a K&N air filter? Have you noticed any difference between that and the stock filter?

Link to the specific filter I am referring to.
K&N 33-2457 Replacement Air Filter, Replacement Filters

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  #2  
Old 05-29-2016, 11:32 AM
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Re: K&N Air Filter

Quote:
Originally Posted by protect1989 View Post
Ive searched the forum for this thread or any posts with no success.

Anyone use a K&N air filter? Have you noticed any difference between that and the stock filter?

Link to the specific filter I am referring to.
K&N 33-2457 Replacement Air Filter, Replacement Filters
Pick up seems to feel a little quicker and sounds a little better when you really step on it over stock filter. Not sure if gas mileage is any better but on Hiway at 72MPH I'm getting 26.6 + MPG

I purchased the K&N a while back but if I were to do it again I would go with this filter. Same performance and benefits but doesn't need to be oiled.

http://www.autoanything.com/air-filt...ow-air-filters
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Old 05-29-2016, 12:00 PM
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Re: K&N Air Filter

I was reading some reviews about K&N filters (or really any "performance" filter) and it was stating that the increase airflow comes at the cost of increase dust/dirt to the engine. The filter doesnt do as good of a job catching the contaminants since its goal is to increase air. Any truth to the statement?
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Old 05-29-2016, 03:03 PM
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Re: K&N Air Filter

Quote:
Originally Posted by protect1989 View Post
I was reading some reviews about K&N filters (or really any "performance" filter) and it was stating that the increase airflow comes at the cost of increase dust/dirt to the engine. The filter doesnt do as good of a job catching the contaminants since its goal is to increase air. Any truth to the statement?
Not according to K&N?

K&N Air Filter Facts You Should Know

I really have no idea but if you google it there are numerous independent test and opinions. Personally I've been using them for years. I had one on my work truck that I sold at 220,000 miles never had one issue with the k & n filter, engine ran perfect!
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Old 05-29-2016, 07:32 PM
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Re: K&N Air Filter

I have used K&N for many years, but am using a non-oiled AEM aftermarket "permanent" filter in my JGC at this point.
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Old 05-29-2016, 07:36 PM
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Re: K&N Air Filter

The internet is your friend on this one since there have been many tests out there that have measured the ability of K&N to filter contaminants. Most of them show they do significantly worse than OEM type paper filters. There are also many instances of people over oiling the filter which can clog up the MAF sensor. This is of course user error, but happens nonetheless. While the filter is lifetime, don't forget you will have to buy the "recharge" kit for it with the cleaner and oil ($10) so it isn't necessarily a single entry cost. How long the recharge kit lasts is up to how often you clean/oil but it should last 4-5 cleanings minimum.
These types of questions have to be debated by each owner and priorities set. If a filter lets in more air for power then it is also going to let in more contaminants. Is it enough to damage an engine? Who knows. Are you ok with this risk for a little more power (also debatable)? That's up to you. Just be careful as to the source of your information. K&N thinks they work better! No kidding, really!
And then there's posters like above who think that because they didn't have an issue then it means no one else will. All that means is that the filter didn't let in enough sand for his engine to grenade in 220k miles, what about 230, 240? Those claims don't mean much. It's like a guy saying I ran 5w30 in an engine that specifies 10w60 and never had an issue. Great, the next owner will.
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Old 05-29-2016, 08:56 PM
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Re: K&N Air Filter

This has been covered here on this forum several times!
Did you actually try to search??

The popular misconception is that K&N oiled cotton gauze filters can achieve a higher air flow thru their filters while still maintaining the ability to filter fine dirt particles at the same time. If you do some research on the topic you can find the truth. The truth being a K&N oiled cotton gauze filter flows more air than a paper filter while allowing more fine particulate (dirt), into your engine while doing it! K&N's mass media marketing glosses over this simple truth!

K&N Cold Air Intake (CAI) 63-1570

Love my new K&N 63 Series

From other forums;

http://www.bobistheoilguy.com/forums...Number=2218080
http://blog.consumerpla.net/2011/03/...-worth-it.html
http://www.bobistheoilguy.com/forums...53#Post2420553
Filtration Testing for Amsoil, K&N, Napa, Jackson Racing, Baldwin, and Mazda air filters on a Miata
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Old 05-30-2016, 08:48 AM
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Re: K&N Air Filter

Thanks for the help on this one. Its logical that increase airflow would come at the cost of increased contaminants. I guess the real question is do these air filters actually provide any HP or MPG increases and if there is danger to the engine, how long does it take for those issues to develop.

My jeep has a little over 10k on it and I probably wont keep it for another year. Ignoring the fact that its a waste of money, would I see any improvement with the vehicle without doing damage to the engine?

PS- The search came up empty when I tried finding a thread like this. Sweet sweet vindication below
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Old 05-30-2016, 09:44 AM
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Re: K&N Air Filter

Quote:
Originally Posted by Pwrdbym View Post


And then there's posters like above who think that because they didn't have an issue then it means no one else will. All that means is that the filter didn't let in enough sand for his engine to grenade in 220k miles, what about 230, 240? Those claims don't mean much.
(Here we go another K&N filter debate) but since it was directed at me I am going to respond!

I happen to be that guy (who you say) my claim doesn't mean much!!!!! Just sharing my personal experience....Have you had any????

Just to get a better understanding of what you posted please provide actual FACTS or CLAIMS that PROVE that K & N filters DAMAGED engines or as you stated will grenade an engine! I don't mean from user error like over oiling.

They've been making these filters since the 80's and are in 30 countries with millions of vehicles using them! If there are such claims it will be very easy to provide actual lawsuits, dealers voiding warranties or any other factual information resulting in engine failure do to this product!

If so I'll be the first one to throw it in the garbage!
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Old 06-08-2016, 05:28 PM
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Re: K&N Air Filter

Quote:
Originally Posted by Paullee01 View Post
(Here we go another K&N filter debate) but since it was directed at me I am going to respond!

I happen to be that guy (who you say) my claim doesn't mean much!!!!! Just sharing my personal experience....Have you had any????

Just to get a better understanding of what you posted please provide actual FACTS or CLAIMS that PROVE that K & N filters DAMAGED engines or as you stated will grenade an engine! I don't mean from user error like over oiling.

They've been making these filters since the 80's and are in 30 countries with millions of vehicles using them! If there are such claims it will be very easy to provide actual lawsuits, dealers voiding warranties or any other factual information resulting in engine failure do to this product!

If so I'll be the first one to throw it in the garbage!

Really did you read any of the links I posted above??

I was once a K&N fanboi long ago as well, before I saw the error in my ways, and all that extra dirt in my oil! Don't be duped by K&N's marketing BS.

Were you once a smoker who bought the major tobacco companies PR line that "nicotine isn't an addictive drug" and "smoking isn't a health risk"??
Because millions of people do it and most of them didn't get sick or addicted!

Did you use Prestone OAT any Make/Model coolant in your HOAT coolant only Jeep, only to ruin your cooling system and damage your engine because that's what everyone else uses and "that's all they sell" at the local major auto retailer?? Besides millons of people use it! Right??

How many engines have you torn apart after thousands of miles with that K&N oiled cotton gauze air filter you love so much? Would you even know what bearing damage from extra particulate in your oil looks like? Even if "millions of people" made the same mistake?
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Old 06-08-2016, 07:57 PM
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Re: K&N Air Filter

Quote:
Originally Posted by Raptor View Post
Really did you read any of the links I posted above??

I was once a K&N fanboi long ago as well, before I saw the error in my ways, and all that extra dirt in my oil! Don't be duped by K&N's marketing BS.

Were you once a smoker who bought the major tobacco companies PR line that "nicotine isn't an addictive drug" and "smoking isn't a health risk"??
Because millions of people do it and most of them didn't get sick or addicted!

Did you use Prestone OAT any Make/Model coolant in your HOAT coolant only Jeep, only to ruin your cooling system and damage your engine because that's what everyone else uses and "that's all they sell" at the local major auto retailer?? Besides millons of people use it! Right??

How many engines have you torn apart after thousands of miles with that K&N oiled cotton gauze air filter you love so much? Would you even know what bearing damage from extra particulate in your oil looks like? Even if "millions of people" made the same mistake?
Yes, I checked out the links you posted. One was educational! Not sure what your lecture to me about tobacco or coolant has to do with anything. Are those examples? I never smoked nor did I ruin any engines over antifreeze.....I could care less about your analogy!

Still waiting for those voided warranty claims and law suits regarding the air filter??? Whatever....Okay enough b..s...

One of the reasons I like the Jeep forum is that most of the Jeep owners here talk from personal experiences / problems / service issues etc. No conjecture from other blogs and links to other websites. Just personal experiences! You did say your oil had "extra dirt" in it. Interesting, I am going to see if I have extra dirt in mine at my next oil change.

To answer your question NO I've never torn engines apart and NO I am not a mechanic. I only speak from my personal experience. I've used K & N filters since the 80's and I can only say on the 8+ vehicles I've used them on I've never had any issues! I've been using a K & N filter on my 87 Corvette which BTW I bought new in 87. My Vette is now 29 years old and runs just as good as the day I bought it! As I said in my earlier post my truck had 220,000 miles NO issues. My 29 year old Corvette NO issues and everything in between NO issues caused from K&N....I guess I'm just one of the lucky ones.. Oh and BTW I have the Lifetime Maxicare so if my engine blows up I should be covered!

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Old 06-12-2016, 08:38 AM
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Re: K&N Air Filter

Quote:
Originally Posted by Paullee01 View Post
Yes, I checked out the links you posted. One was educational! Not sure what your lecture to me about tobacco or coolant has to do with anything. Are those examples? Yes they are! I never smoked nor did I ruin any engines over antifreeze.....I could care less about your analogy! Apparently you also could care less about all that "extra dirt" you've allowed into your engines over the years??

Still waiting for those voided warranty claims and law suits regarding the air filter??? Whatever....Okay enough b..s...

One of the reasons I like the Jeep forum is that most of the Jeep owners here talk from personal experiences / problems / service issues etc. No conjecture from other blogs and links to other websites. Just personal experiences! You did say your oil had "extra dirt" in it. Interesting, I am going to see if I have extra dirt in mine at my next oil change. And how will you determine that? You'll have to run a quality paper/synthetic media filter and clean oil to get a baseline "particulate suspension" number to compare.

To answer your question NO I've never torn engines apart and NO I am not a mechanic. I only speak from my personal experience. I've used K & N filters since the 80's and I can only say on the 8+ vehicles I've used them on I've never had any issues! I've been using a K & N filter on my 87 Corvette which BTW I bought new in 87. My Vette is now 29 years old and runs just as good as the day I bought it! As I said in my earlier post my truck had 220,000 miles NO issues. My 29 year old Corvette NO issues and everything in between NO issues caused from K&N....I guess I'm just one of the lucky ones.. Oh and BTW I have the Lifetime Maxicare so if my engine blows up I should be covered! So to recap... you have no idea what the internals of your K&N filtered engines look like or what kind of shape they're in. Do you? Nor would you know what scoring or bearing damage looked like even if you could take your engines apart and see for yourself. My tobacco & coolant analogies are exactly the same as your uninformed opinion on K&N oiled cotton gauze air filters... "hey it's worked for me & millions of others, as far as I can tell" You have been completely duped by K&N marketing BS just like all those coolant & tobacco users were duped!

Please do and report back in this thread on the additional "dirt" you found in your oil......... Blackstone labs can do an oil analysis relatively cheap, that's how I knew my K&N oiled cotton gauze air filter was garbage. I didn't read it on the internet or some other Jeep forum. Like most all of my posts here..... from the been there, done that, school of automotive mods & maintenance!


And BTW it was in my now 25 year old '89 C4 Corvette similar to the Red one you have pictured above that I first discovered my K&N oiled cotton gauze filter was garbage, and allowing way to much dirt into my engine that a quality paper or synthetic media filter would not!! That my friend is not a theory, or an opinion, it's a fact! And it cannot be disputed!
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