Dont worry about the foreign dirt. Its the domestic dirt that causes the problems!
k and n
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My UOA's with a K&N FIPK installed have shown lower Si levels than those with a stock paper filter. Do K&N filters meet or exceed OE requirements for filtration? Yes.
Can I feel a power gain the K&N installed? No, not by itself. When combined with a better exhaust system, the combined "package" gives a noticable SOTP improvement. Would a muffler do anything by itself? No.
About the Spicer test that was posted here a few months ago: K&N has invited Spicer to visit their facility in Riverside and witness their test results first hand. Spicer claims to have spent $250K on test equipment. K&N spent 2 million on their equipment, supposedly designed and built by some company in Texas, the name escapes me right now, sorry.
Can I feel a power gain the K&N installed? No, not by itself. When combined with a better exhaust system, the combined "package" gives a noticable SOTP improvement. Would a muffler do anything by itself? No.
About the Spicer test that was posted here a few months ago: K&N has invited Spicer to visit their facility in Riverside and witness their test results first hand. Spicer claims to have spent $250K on test equipment. K&N spent 2 million on their equipment, supposedly designed and built by some company in Texas, the name escapes me right now, sorry.
Just because they told you so?
That package will not give you anything extra!
How about a K&N sticker?
I heard people claiming at least 5 HP from that mod alone.
If you wanna do it the right way, you'll have to start with the intake, then port the head(s), upgrade the injectors, the throttle body, get the free flowing CAT, add the catback and then start tuning the package on a dyno.
When I had a K&N drop in filter it always SOUNDED like the car was making more power.
I like my OEM paper filter because the car doesn't have that ricer intake sound.
I like my OEM paper filter because the car doesn't have that ricer intake sound.
This is my first post and I would like to add this observation. I always ued OEM filters in my Lincoln Town car then about a 2 years ago I bought a K&N. After about 2 months the car started to miss on startup. This went on for some time. Through the Lincoln forum I visit I asked for some help. I was told get rid of the K&N and clean the MAF. I did that and have had no problems since. Just my 2 cents worth
Can you give us the exact link on that?
His air filter tests are very very impressive. Lots of data with graphs and everything. The results don't apply for everybody since only one size filter was tested, but you can make some good generalizations.
kangacay,
to BITOG! Yeah, there are quite a few reports of the oil coming off K&N air filters fouling up the MAF sensor.
i have looked in my intake manifold recently. there was oil in there but it is from the pcv valve not the k&n, in the little bit of oil that was in there is was just oil, no dirt.
i also do not believe the statement that k&n's only provide a power gain above 5000 rpm. when i got my car completly stock i could not pull this one hill without downshifting out of overdrive to stay at or slightly above the speed limit. after i put my k&n in it would pull the hill without downshifting to maintain the speed limit. remember this is overdrive rpms, ~2500 rpm.
i also do not believe the statement that k&n's only provide a power gain above 5000 rpm. when i got my car completly stock i could not pull this one hill without downshifting out of overdrive to stay at or slightly above the speed limit. after i put my k&n in it would pull the hill without downshifting to maintain the speed limit. remember this is overdrive rpms, ~2500 rpm.
btw... having posted the bbb link, I should mention that I think that some of the FUD involving the K&N is a bit overblown. I don't think it is as bad as some people imply. If you are running a K&N and your UOA looks good then I wouldn't worry about it.
I have both a K&N and the Amsoil Foam that I have played around with. I switched to the foam after reading the K&N concerns. But I found that the foam filter causes hesitation problems in my car. When I swap the K&N back in the problem goes away instantly. And I'm sure it is not imagined.
I have both a K&N and the Amsoil Foam that I have played around with. I switched to the foam after reading the K&N concerns. But I found that the foam filter causes hesitation problems in my car. When I swap the K&N back in the problem goes away instantly. And I'm sure it is not imagined.
I purchased a K&N filter last year for my Camry 92. I also was a believer, until I red convincing information about the filter inability to filter smaller particles, even though these particles they may not arm the engine....why take the risk...So I went back to Wix (Napa Proselect. I think it make sense to use a K&N in a racing environment (engines getting rebuilt after every race)than in cars that run 300,000 kms+ that are not expected to have any major failures if well maintained. P.S. My K&N is now installed in my home air cleaner and it's doing a wonderful job!
As you can see, there is no concensus on whether or not K&N and other aftermarket so-called performance filters actually give better performance and whether or not they filter adequately.
I use only OEM filters...filters made by the maker of the original filters, but cheaper because they don't have the automaker's name on them. For the posting about the car that climbed the hill better with the K&N filter, we need to know how it would have done with a clean OEM air filter. It might have worked just as well. If it had either a dirty air filter, or a low quality new paper filter, it might have poor air flow.
On a gasoline engine, keep in mind that the job of the throttle is to restrict the flow of air into the engine. If the throttle is not wide open and the engine running at high rpm, the air flow through the filter is meaningless unless the filter is badly clogged with dirt. There is NO possible advantage to a so-called performance filter when the throttle plate is partly closed. On a diesel, the air flow isn't maxed until the turbocharger is really screaming.
About the myth of K&N filters filtering better when dirty...well it's not a myth, but when clogged with dirt they also have terrible air flow. What's the benefit?
I had a K&N air filter on my Volvo turbo. The upper lid of the airbox (filter outlet side) would have a light layer of dust. I went back to OEM Mann air filters, the car runs just as peppy, and the airbox stays clean.
Ken
I use only OEM filters...filters made by the maker of the original filters, but cheaper because they don't have the automaker's name on them. For the posting about the car that climbed the hill better with the K&N filter, we need to know how it would have done with a clean OEM air filter. It might have worked just as well. If it had either a dirty air filter, or a low quality new paper filter, it might have poor air flow.
On a gasoline engine, keep in mind that the job of the throttle is to restrict the flow of air into the engine. If the throttle is not wide open and the engine running at high rpm, the air flow through the filter is meaningless unless the filter is badly clogged with dirt. There is NO possible advantage to a so-called performance filter when the throttle plate is partly closed. On a diesel, the air flow isn't maxed until the turbocharger is really screaming.
About the myth of K&N filters filtering better when dirty...well it's not a myth, but when clogged with dirt they also have terrible air flow. What's the benefit?
I had a K&N air filter on my Volvo turbo. The upper lid of the airbox (filter outlet side) would have a light layer of dust. I went back to OEM Mann air filters, the car runs just as peppy, and the airbox stays clean.
Ken
A dirty air filter can most certainly cause a carbureted vehicle to run rich at part throttle.
On a fuel injection car, there will be a very minor pumping loss [at part throttle], as the engine has to work a little harder to draw air in.
At full throttle, a dirty air filter will cause noticeable restriction.
This isn't to say K+Ns are perfect, but many get better running and good filtering with them. The conditions you drive in are important. If it was dusty, I'd stick with paper and change it often.
On a fuel injection car, there will be a very minor pumping loss [at part throttle], as the engine has to work a little harder to draw air in.
At full throttle, a dirty air filter will cause noticeable restriction.
This isn't to say K+Ns are perfect, but many get better running and good filtering with them. The conditions you drive in are important. If it was dusty, I'd stick with paper and change it often.
This means ABSOLUTELY nothing. All a company has to do to maintain a favorable rating with the BBB is respond to complaints. It doesn't matter if you produce a quality product or a poor one or whether you satisfactorily resolve the complaint or not. In fact if you had ACTUALLY BOTHERED TO click on the link and READ the basis for the "F" rating you would have seen it was based solely and completely on the K&N's failure to respond to 4 complaints during the previous 36 months. Move on.quote:
Originally posted by vad:
Wow!
We strongly question the company’s reliability for reasons such as that they have failed to respond to complaints, their advertising is grossly misleading, they are not in compliance with the law’s licensing or registration requirements, their complaints contain especially serious allegations, or the company’s industry is known for its fraudulent business practices.
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