K&N vs OEM Paper Airfilters

[ZMan]

Sorry, you are dead wrong! the filter efficiency will stay the same, you will just get increased air flow capacity with the additional area. In the experiment the air flow was very low, just the convection off the heated resistor.

If your thinking was correct, the full size K&N would be passing marbles!!

For the next test I think you need to actually use dust. Since that's the real worry here.

 

[Copytech]

what method would this be? I guess I don't have half a brain. off-road only? how so, probably why ive never heard of it. or the combination of me never owning an off road vehicle and me being stupid

He is refering to running the PCV hose into the exhaust.
like this

 

[Sevensecondsuv]

He is refering to running the PCV hose into the exhaust.

Nope.

 

[Sevensecondsuv]

I'll say it again. I had a 70,000 mile motor, ran a K&N on it for 100,000 more miles. I then tore it apart and the cylinder walls were in perfect condition. If the K&N was letting junk through, it sure as heck wasn't hurting anything!

I have nothing against paper filters and on a stock vehicle I'd probably run one simply because they're cheaper and I hate cleaning K&N's. But for the space I have under the hood combined with the engine occupying it, a K&N filter simply FITS, whereas a stock air box DOESN'T!!!!!!

And for what's it worth, my MAF NEVER needed cleaning!!!!!

Some people should learn how to waste their time doing something less retarded than conjuring up meaningless lab filter experiments that don't prove anything, when real world 100,000 mile experiments on a REAL engine show that a K&N style filter does all the filtering an engine needs!

And BTW, I'm an experienced, degreed mechanical engineer so don't try to pull the "baffle 'em w/ BS" card on me. Reading all the myths about system flow typed here by several members (Not on Bob's part, he actually seems to understand) makes me want to write a 2 page lecture on flow of air through an engine and how the whole thing works as a system and how the flow resistance of each part of the system affects the total system flow, but it would be boring and 80% of the posters here wouldn't understand anyways.

 

[Copytech]

Nope.

Then enlighten us with your vast knowledge. Just because you know and maybe a couple of other people figure it out doesn't mean that we have half a brain. I bet most of the readers of this thread have no idea what you are talking about but are afraid to ask in fear of being ridiculed.



Your real world experience with the K&N is what the readers should take to heart. I have always been amazed when someone asks for input on a product how many nay sayers come out. Though they have no actual experience with the product.

 

[Will]

Reading all the myths about system flow typed here by several members (Not on Bob's part, he actually seems to understand) makes me want to write a 2 page lecture on flow of air through an engine and how the whole thing works as a system and how the flow resistance of each part of the system affects the total system flow, but it would be boring and 80% of the posters here wouldn't understand anyways.

Do it.

 

[RobbieD]

Reading all the myths about system flow typed here by several members (Not on Bob's part, he actually seems to understand) makes me want to write a 2 page lecture on flow of air through an engine and how the whole thing works as a system and how the flow resistance of each part of the system affects the total system flow, but it would be boring and 80% of the posters here wouldn't understand anyways.

Great idea, but you're probably right. Might try correlating engine air flow with flatulence; that would make it more interesting, and more of the readership might grasp it better.

 

[Will]

Laminar flatulance is inaudible, is that correct?

 

[RobbieD]

Laminar flatulance is inaudible, is that correct?

Gee, I dunno, Will. Doesn't it provide more lift with less resistance?

 

[04 EDGE]

This thread is like a political argument. A lot of bluster, and fluster that doesn't change anyones mind.

One poster with some kind of vendetta against K&N

couldn't have said it better!!!!!!


my personal experience with my k&n goes like this, it has been in the stock air box for 5 years, it was installed right after i bought the truck, it has been in there for 58K, it has been cleaned once, i have never had any problems with my MAF sensor or any debris in the tube. the TB is also clean.

as stated above this is a person who seems to think he is a dictator sorta like hitler, he would have had everyone driving beetles if he would have not been defeated.

makes me glad i also have an electric fan.

this sort of crap has been going on for years on sites like this, its a shame it continues to be allowed.

 

[OilPatch197]

Next on Maury,

K&N filters... and the people that swear by them!

 

[Sevensecondsuv]

Then enlighten us with your vast knowledge. Just because you know and maybe a couple of other people figure it out doesn't mean that we have half a brain. I bet most of the readers of this thread have no idea what you are talking about but are afraid to ask in fear of being ridiculed.

Sorry, I didn't mean to offend anyone with the half a brain comment. It was just my way of saying that it's extremely simple. I guess it's not completely obvious however. I don't want to write it here because describing mods that defeat an emissions control system is illegal and against forum rules. All I'll say is that you need to think about how the PCV systems works and what it's purpose is. Then think of how the PCV system can accomplish the same purpose without crapping up the intake. Basically you are turning it into a 60's style pcv system where no emissions rules applied.

 

[Bob Ayers]

couldn't have said it better!!!!!!


my personal experience with my k&n goes like this, it has been in the stock air box for 5 years, it was installed right after i bought the truck, it has been in there for 58K, it has been cleaned once, i have never had any problems with my MAF sensor or any debris in the tube. the TB is also clean.

as stated above this is a person who seems to think he is a dictator sorta like hitler, he would have had everyone driving beetles if he would have not been defeated.

makes me glad i also have an electric fan.

this sort of crap has been going on for years on sites like this, its a shame it continues to be allowed.

See if you can understand this:


There are two indisputable FACTS from these comparisons:

1) The OEM paper filters have 5.5X the filter media area of the K&N filter media


2) The paper filter media filters much better than the K&N filter media


And this comparison is consistant with:

1) The results of this independent air filter test:

http://duramax-diesel.com/spicer/index.htm


2) The reports of contaminated MAF sensors, high Si in UOA, and "dusted" turbos when running K&N air filters


3) K&N's recommendation to use the following in "very dusty conditions"

http://www.knfilters.com/search/wrap.aspx

 

[Bob Ayers]

I'll say it again. I had a 70,000 mile motor, ran a K&N on it for 100,000 more miles. I then tore it apart and the cylinder walls were in perfect condition. If the K&N was letting junk through, it sure as heck wasn't hurting anything!

If the motor was in such good shape, why was it torn down?

And BTW, I'm an experienced, degreed mechanical engineer so don't try to pull the "baffle 'em w/ BS" card on me.

Seems like K&N was able to.....

 

[04 EDGE]

bobbie, how long are you going to beat this dead horse? here is the great thing about this, ITS MY CHOICE as to what kind of air filter i want to use! welcome to a free society called america. we all know how you feel about this now get over it! stop wasting band width. now go take some more pretty pictures or something.

whats next on your agenda, bashing someone for converting there truck to 4wd? OMG its not OEM lol