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Old 02-21-2010, 07:12 PM   #1
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K&n air filters

HAS ANYONE USED THE K&N IN PLACE OF THE STOCK FILTER IN THE STOCK AIR BOX? I WAS WONDERING IF IT'S REALLY WORTH THE COINS.NOT YELLING JUST DON'T TYPE WELL.

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Old 02-21-2010, 08:32 PM   #2
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Hey Chief I use the k&n in every thing i own and yes it is worth the money.

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Old 02-21-2010, 08:42 PM   #3
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Yo Chief. Listen to one of the fraternity brothers on this one. DO NOT waste your money on KN.

They are terrible if you spend ANY amount of time in a dusty (read jeeper environment) Plus, your stock airbox and filter is just fine.

I ditched my KN junk and bought a stock airbox to return to stock last year. My throttle body and engine never loved me more!
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Old 02-21-2010, 08:45 PM   #4
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The long-standing concensus on the board is that the K&N is snake oil for our Wrangler applications. Reasoning running as stated above they just don't filter as well as a good pleated filter for a dirty environment.
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Old 02-21-2010, 09:06 PM   #5
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thanks for the inputs, guys.
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Old 02-21-2010, 10:06 PM   #6
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i have one in mine and i see no difference in mileage or performance...if it gets dirty i just pound it out and throw it back in the air box and go...
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Old 02-21-2010, 11:44 PM   #7
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I talked to the guys at 4wheelparts and they said that K&N filters actually work better dirty and if properly oiled will stop all the nasty trail dirt. But hey I am no expert yet. All I know is that since i cleaned my carb and dropped one it my HP and throttle response has been better on the road
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Old 02-22-2010, 07:55 AM   #8
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Had one on a 360 V8 for one year. Noticed absolutely nothing. Found the washing and oiling tiresome and gimmicky and you have to buy extra stuff/chemicals on top of the already ridiculously priced element.

After not noticing one iota of improved anything, I came to the conclusion it was a racket. BUT, having said that, much smarter guys than me swear on them and claim they make a difference. So we're back at square one...
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Old 02-22-2010, 08:04 AM   #9
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I have ran K&N filters in the past on my road vehicles and they seemed to do a better job, however, put one on the YJ and have noticed no changes what so ever. I went back to the stock airbox as well, just change my air filter when I change my oil.
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Old 02-22-2010, 08:14 AM   #10
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Yeah pretty much i think your going to get a lot of yes a no's on this topic. When I was looking to switch and did a bunch of forum trolling on different sites I found people either said yes i noticed a difference or they said the noticed nothing. If you can spare the 40 dollars id say to try it out for your self. I did notice though that most of the people with jeeps that said they notice a difference had a 2.5L. If i were u id clean out the carb, pull the airflow restrictor and run that for a a few days and see if you notice a difference before you buy the K&N. I did all that and then through the K&N in and for me it helped alot with my daily driving to and from work and school.
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Old 02-22-2010, 10:09 AM   #11
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I couldn't find the pix I took but in the below thread are some pictures I took after my "well oiled and maintained" K&N got taken on a dusty jeep ride.

Time for the K&N to leave
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Old 02-22-2010, 10:16 AM   #12
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Originally Posted by stevens243 View Post
I couldn't find the pix I took but in the below thread are some pictures I took after my "well oiled and maintained" K&N got taken on a dusty jeep ride.

Time for the K&N to leave
good info, Im thinking either use K&n as my daily filter and a stock filter for off road or maybe the sock thing.
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Old 02-22-2010, 08:58 PM   #13
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like i said i have the k&n in all 5 jeeps and all 22 motorcycles and if you don't readjust the air fuel mixture for the increased air flow you will not notice any improvement and maybe even not run as good.
but not everyone knows how to adjust for the difference .
and they do filter better then a stock paper filter in harsh conditions or i would not of been using them for the past 25 years in my race bikes.
but they do cost more.
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Old 02-22-2010, 09:33 PM   #14
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Originally Posted by scott howard View Post
like i said i have the k&n in all 5 jeeps and all 22 motorcycles and if you don't readjust the air fuel mixture for the increased air flow you will not notice any improvement and maybe even not run as good.
but not everyone knows how to adjust for the difference .
and they do filter better then a stock paper filter in harsh conditions or i would not of been using them for the past 25 years in my race bikes.
but they do cost more.
There was no pdf, nothing in my instructions about air/fuel when I bought the kit new. I thought it was worthless on a carb V8. Yeah, I adjusted port/vac intakes on Edel 1406 for the extra air, but I really did not notice any extra air intake. Are carb 360's immune from K&N's advantages..or? Always ran (before and after) the great Pennsylvania Wix on my vehicles. In others words, did not see mph, mpg, power, anything improvement with K&N. So I wrote it off. In the interests of honesty I will tell you my 360 has mighty street power but shrugs off any highway grade like a little girl (similar to the 4cyl 2.5) and I've traced that to compression probs--needed new piston rings.

Still--with worn rings in a 360 the K&N did nothing for my 360. On or offroad. Under normal daily driving conditions.
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Old 02-22-2010, 09:40 PM   #15
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Quote:
Originally Posted by scott howard View Post
like i said i have the k&n in all 5 jeeps and all 22 motorcycles and if you don't readjust the air fuel mixture for the increased air flow you will not notice any improvement and maybe even not run as good.
but not everyone knows how to adjust for the difference .
and they do filter better then a stock paper filter in harsh conditions or i would not of been using them for the past 25 years in my race bikes.
but they do cost more.
The beauty of the interwebs is one man's bullshit is anothers well BS. Just isn't the data to support these claims.
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Old 02-22-2010, 09:46 PM   #16
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I have to agree with Mr. Scott Howard. If you dont tune your air fuel mix, your not gonna really feel the difference. but just because YOU dont feel the difference, I can gurantee that your engine will. Remember its all about keepin dirt out of the engine so when you see all the build up on your K&N filter after a ride its prolly cus its doin its job.
My family has a deep conection with K&N and has used nothing else for the past 40 yrs. if you really dont believe that they are the superior filter just look around at all the copy cats and you'll see that everyone has the same design (wire raped cloth or some kind of mickey mouse cardboard) everyone wants the K&N look. (not talkin about the sponges hear). just dont say K&N isnt worth its weight in salt.
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Old 02-22-2010, 09:53 PM   #17
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The average driver has no ability to tune air-fuel ratios. Living in a state like CALI any mod to make such an adjustment is illegal anyway.

So a K&N is not going to buy you anything except a lot of work and every two years you get to undo everything to meet the smog check anyway.
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Old 02-22-2010, 09:55 PM   #18
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The beauty of the interwebs is one man's bullshit is anothers well BS. Just isn't the data to support these claims.
I'm not sure K&N supplies any data except customer word of mouth. I can't say it's bullshit for Scott or the dozen of guys I know that swear by it...but it sucked for me and seemed like an expensive gimmick and a scam. I felt like a sucker that bought the Tornado intake...(although I didn't do that.)

Look at it this way. I know even more guys that foam at the mouth at Lucas Oil as an additive in every Jeep orifice (he said orifice, heheh). I've seen mechanics drool at me that it was next to Godliness. All worship Lucas. And I have no doubt it made their vehicles better.

Just never dazzled me...can't say it ever salvaged or prolonged the life of any of my engine parts...but there you go.

I take all my vitamins and supplements. But my doctor and western medicine tells me vitamins and supplements are a joke and only they know better than anybody in the world. Of course I think doctors are mostly full of $$hit, I try cure my own ills for the most part, and don't get sick rarely (midwestern blood).

Bottom line: who's right and who's wrong. The K&N argument is all in the mind...and I could drop dead tomorrow. Belief is a strong thing...

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