wilgockid
Rookie Author
Augusta
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Message Posted: May 21, 2013 7:24:46 PM
I used one in my jeep, felt like it removed a flat spot in the power band.
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jimmy544
Champion Author
Boston
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Message Posted: May 19, 2013 10:52:40 AM
Yes I have had one on one of my Volvoes for a couple of years now. Seems ok have not noticed much difference in fuel economy though my mileage has been going up over the years.
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IAMCANADIAN73
Champion Author
Ontario
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Message Posted: May 19, 2013 9:01:59 AM
No
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jonjon57
Champion Author
Raleigh
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Message Posted: May 19, 2013 7:50:52 AM
No
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BigHorne1
Champion Author
Missouri
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Message Posted: May 18, 2013 9:29:21 AM
Yes, for just one of my vehicles.
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IAMCANADIAN73
Champion Author
Ontario
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Message Posted: May 18, 2013 8:45:04 AM
No
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IAMCANADIAN73
Champion Author
Ontario
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Message Posted: May 18, 2013 8:44:53 AM
Nope
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cv
Champion Author
Raleigh
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Message Posted: May 18, 2013 7:19:13 AM
I did once for a while, but did not add another one to my other vehicles.
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DanFMA
Champion Author
Massachusetts
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Message Posted: May 17, 2013 4:57:36 AM
No.
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borsht
All-Star Author
Oakland
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Message Posted: May 17, 2013 1:55:39 AM
yes
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IAMCANADIAN73
Champion Author
Ontario
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Message Posted: May 17, 2013 12:33:36 AM
Nope
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IAMCANADIAN73
Champion Author
Ontario
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Message Posted: May 17, 2013 12:33:28 AM
No
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kmapjr
All-Star Author
Detroit
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Message Posted: May 16, 2013 3:48:46 PM
GrumpyCat : you can also ask this guy if he did a grease test before & after his tests on small everyday drivers, when he put a K&N in them to test..
Ohh, & what about the Motocross scene that uses K&N? I'm sure there's plenty of dirt, fine dust, anything that could get pass a filter in these settings. So exactly how does the dirt get through again? Oh, that's right, didn't oil it properly, 1 filter, lifetime replacement, $20 more bucks than the cheap paper element, yup ill take one & have had one for 70,000 miles now.
Person who put the filter in several small cars
Rick Johnson, 1 of the finishers, at Baja with a K&N : He would be the person to ask as well
It's all about oiling them properly to catch the fine particles, paper elements don't require oil to trap the dirt, that's where K&N came along in 1969. And 1 more site for those saying K&N doesn't block out dirt particles, I'm sure if they didn't filter well we wouldn't even here of them in off-road applications.
K&N Off-Road & On-Road Applications
[Edited by: kmapjr at 5/16/2013 3:51:33 PM EST]
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forestghost07
Veteran Author
Miami
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Message Posted: May 13, 2013 11:52:22 AM
My SUV has their cold air intake setup - looks cool but haven't noticed any improvements.
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thirstyV8suv
Rookie Author
Columbus
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Message Posted: May 12, 2013 9:02:14 PM
GrumpyCat -
I'm curious what happened in your grease test.
Thanks in advance.
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thirstyV8suv
Rookie Author
Columbus
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Message Posted: May 12, 2013 8:59:30 PM
I've used the FIPK on a couple vehicles I've owned. The typical FIPK is somewhere between $200-300 so I wouldn't buy it strictly for fuel economy purposes. I installed them more for power increases but any increase in MPG was just a bonus though I doubt I'd break even on the purchase from fuel savings during the life of the vehicle.
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giwan
Veteran Author
Michigan
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Message Posted: May 12, 2013 10:37:50 AM
No over priced
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jl1rp
Champion Author
New Hampshire
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Message Posted: May 9, 2013 12:46:56 AM
I have use them.
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PatAZ
Champion Author
Tucson
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Message Posted: May 8, 2013 10:42:08 PM
Tried them and found no improvement.
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Acaciaguy
Rookie Author
Michigan
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Message Posted: May 8, 2013 6:00:22 PM
I got mixed results. If I granny it, I get the same. If I NASCAR it, I do get better engine performance. Overall, no change in MPG.
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Houckster
Champion Author
Atlanta
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Message Posted: May 8, 2013 5:42:43 PM
MYBIGTRUCK writes: CAT did a study many years ago on their big earth moving machines running K&N filters and concluded the study with significant engine wear compared to those that ran standard filters.
_____
The offroad environment is not comparable to what cars that stay on the road encounter. If I were going to do a any appreciable amount of offroad driving, I'd use a standard filter. On the road, a K&N is just fine.
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mybigtruck
Sophomore Author
San Jose
Posts:125
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Message Posted: May 8, 2013 4:43:13 PM
I've never used anything other than stock OEM filter elements all my life. Not sure what the gains are with K&N considering most of the air restriction on gassers is the throttle itself. Unless you're driving WOT or near WOT all the time, I don't see how a K&N will benefit.
CAT did a study many years ago on their big earth moving machines running K&N filters and concluded the study with significant engine wear compared to those that ran standard filters.
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bearscharger
Champion Author
Cleveland
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Message Posted: May 7, 2013 8:12:25 PM
No
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gougedQC
Champion Author
Montreal
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Message Posted: May 7, 2013 8:06:12 PM
When I used to race, we would use filters like that.. which we said at the time, were designed to keep out small birds, but even then in my insignificant amateur class, the engines were rebuilt at least once a season.
Try Grumpy Cat's advice << Smear a finger of grease somewhere on the wall of the clean side of your airbox. Use a K&N. Check the grease a few weeks later and see if you are still willing to use a K&N.>>
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delgadobb
Rookie Author
Nevada
Posts:14
Points:2,270
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Message Posted: May 6, 2013 9:42:52 PM
Yes, we use K&N filters in both our cars - mine cost $40, my wife's car $45 & the cleaning kit $9. While the up-front cost may seem prohibitive, if you know you're going to keep your car for a while you'll save a bunch in the long run. I just cleaned both filters & we're at the point where we would've already spent more than $94 (what we've spent on both filters & cleaning kit) - probably about $130-150 on normal air filters. Everything from here forward is a 'freeroll' since the K&N filters have lifetime warranties & both cars have many years of useful life remaining.
Neither of our vehicles could be described as 'performance' oriented, they're quite ordinary. That said, both have seen a slight performance improvement from the time we installed the K&Ns & both have aged very well. Mileage has improved a few percent, but not dramatically. Still, we feel the K&Ns have been beneficial & they're certainly going to save us a big chunk of money in the long run.
I should note we also run synthetic oil in both vehicles with Purolator PureOne filters. This is most likely to help longevity of our cars, but with synthetic oil's qualities it's possibility that is also helping mileage.
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ldheinz
Champion Author
Chicago
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Message Posted: May 6, 2013 10:26:02 AM
gougedQC - "YOur stock engine is designed very carefully with all standard components in mind. "
Actually, your stock engine is designed to maximize profitability for the auto manufacturer, not necessarily to maximize performance or economy for the auto owner. Some of us prefer to improve things.
gougedQC - "A KN will let more air in, but again whats the point if you stick with stock eshaust headers, mufflers and pipes."
Because a lower restriction air filter will decrease pumping losses within your engine, resulting in better performance and economy. It's kind of like putting headers on your car to increase airflow.
Also, how about responding to Houckster's comment that ultrafine particles will be burned up and exhausted without significant contribution to friction or oil degradation?
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going up
Champion Author
St. Louis
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Message Posted: May 6, 2013 8:24:11 AM
No, cost prohibitive
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Banjoe
Champion Author
Winnipeg
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Message Posted: May 6, 2013 8:13:18 AM
How can I adapt a K&N setup for my home furnace?
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IAMCANADIAN73
Champion Author
Ontario
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Message Posted: May 6, 2013 7:24:47 AM
Nope
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IAMCANADIAN73
Champion Author
Ontario
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Message Posted: May 6, 2013 7:24:36 AM
No
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GLM4205
Champion Author
Toledo
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Message Posted: May 6, 2013 5:47:30 AM
NO
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Z12
Champion Author
Toledo
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Message Posted: May 2, 2013 9:17:59 PM
I do not
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Z12
Champion Author
Toledo
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Message Posted: May 2, 2013 9:17:27 PM
I do not
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gougedQC
Champion Author
Montreal
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Message Posted: May 2, 2013 5:46:52 PM
if you don't think tiny specks of dust dont add to wear on cylinder walls and rings, you dont know much about engines.
What do yo think protects the wall from wear by the rings and piston itslef? A microscopic film of oil..which can allow tiny specs of dust to stick and scratch....microscopic sure..but thousands of microscopic scratches means things start to wear..
Grumpy is correct.. your computer will give you all the air you need for proper combustion at all settings... unless your filter is badly clogged, a paper filter will clean far far better than KN and do so while allowing all the air needed to pass through.
A KN will let more air in, but again whats the point if you stick with stock eshaust headers, mufflers and pipes.
YOur stock engine is designed very carefully with all standard components in mind.
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GrumpyCat
Champion Author
Alabama
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Message Posted: May 2, 2013 4:01:55 PM
"While a K&N filter does allow more and larger dirt particles into the combustion chamber, they are still so small that no damage can result."
Then why does K&N make such a big deal about "filtering efficiency" of their products?
Why do the paper filter makers even bother to try to filter those smaller particles?
Answer: Because it does matter.
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GrumpyCat
Champion Author
Alabama
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Message Posted: May 2, 2013 3:59:53 PM
"gougedQC - "kmapir.-- they flow air better because they do not filter as well. less restriction=less filtering."
Given the same technology, perhaps, but the oil in the K&N makes them sticky, so they can filter dirt without blocking the passage of air, giving them more flow with equal filtering."
Smear a finger of grease somewhere on the wall of the clean side of your airbox. Use a K&N. Check the grease a few weeks later and see if you are still willing to use a K&N.
I did. I won't.As for "more flow", you don't need it. Air + fuel = power. Unless your foot is all the way to the floor any restriction the air filter does not make will be made by lifting your right foot. A gasoline engine wants exactly the same volume of air for a given load no matter what air filter you use. The ECU will make sure it gets only the proper amount of air and that only the proper amount of fuel.
If you had a simple carburetor you could fool it into running leaner with a less restrictive air filter. Then again you could tune the carburetor leaner for exactly the same effect.
[Edited by: GrumpyCat at 5/2/2013 4:01:04 PM EST]
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Houckster
Champion Author
Atlanta
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Message Posted: May 2, 2013 2:09:27 PM
GOUGDC writes: . . . not filtering means more dust getting into the cyclinders, meaning more wear on rings and cylinder walls.
______
Theoretically true, practically not.
While a K&N filter does allow more and larger dirt particles into the combustion chamber, they are still so small that no damage can result. Remember that the dirt particle which is so small you would have trouble seeing it is swirling around at hundreds of miles per hour so there's no way the particle can settle to the bottom of the cylinder and gradually work its way past the rings. Rather the particle is oxidized and exhausted.
As with IDHEINZ, I've had my filter in since my ride was new and it's not burning any oil either.
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ldheinz
Champion Author
Chicago
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Message Posted: May 2, 2013 9:00:47 AM
gougedQC - "kmapir.-- they flow air better because they do not filter as well. less restriction=less filtering."
Given the same technology, perhaps, but the oil in the K&N makes them sticky, so they can filter dirt without blocking the passage of air, giving them more flow with equal filtering.
I have a 96 Taurus with 278,000 miles that's had a K&N since I got it and it's not using oil, so there's certainly no problem in a normal engine in normal driving.
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gougedQC
Champion Author
Montreal
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Message Posted: May 2, 2013 6:23:18 AM
kmapir.-- they flow air better because they do not filter as well.
less restriction=less filtering.
not filtering means more dust getting into the cyclinders, meaning more wear on rings and cylinder walls.
not good for your engine
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kmapjr
All-Star Author
Detroit
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Message Posted: May 2, 2013 5:12:10 AM
This is old, but people are posting so FWIW, K&N are the best filters out there & yes for everyday riders "gougedQc" , don't know what you mean by that, but overall better airflow, they are proven to save gas, lifetime warranty, washable, and the reason they are a good everyday filter or for whatever application is the amount of oil you put on the filter. Follow the instructions properly when cleaning & oiling, nothing but smoooth..
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gougedQC
Champion Author
Montreal
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Message Posted: Apr 18, 2013 9:02:30 PM
KN flows air more freely- so improves performance slightly.. but at the expense of being a lousy filter.
Its ok for racing engines which get rebuilt, but not a good idea for your everyday car, no matter what the advertising says
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Wanda127
Champion Author
Florida
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Message Posted: Apr 18, 2013 8:44:34 PM
No never used them
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blckwolf
Veteran Author
North Carolina
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Message Posted: Apr 18, 2013 8:31:13 PM
Yes, but only on my motorcycle. My old one was filthy, and so I decided to just replace it. Mileage has improved by about 4 MPG. Obviously, though, this is the result of a clean air filter, and not because it's K&N. K&N just happens to be the only company that makes a filter for my particular air cleaner. The good thing is, it has a lifetime warranty. So if you buy one, just clean it regularly, and you should be fine. If not, replace the regular air filter in your car when you are supposed to according to your manuf. recommendations.
[Edited by: blckwolf at 4/18/2013 8:35:26 PM EST]
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IAMCANADIAN73
Champion Author
Ontario
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Message Posted: Apr 17, 2013 8:58:39 AM
Never
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Solders18
Rookie Author
Oregon
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Message Posted: Apr 17, 2013 2:57:01 AM
Have them on all the vehicles we own (7) definitely worth it. Clean them when they get visually dirty, about once a year. 50k is waaaaay too long for an air filter. They are good for a little seat of the pants pull power and MAYBE 1-2 mpg. You'd be better off adding in an aftermarket air intake along with the filter
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IAMCANADIAN73
Champion Author
Ontario
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Message Posted: Apr 16, 2013 6:52:22 AM
Nope
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IAMCANADIAN73
Champion Author
Ontario
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Message Posted: Apr 16, 2013 6:52:13 AM
No
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forestghost07
Veteran Author
Miami
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Message Posted: Apr 16, 2013 1:13:14 AM
On my Chevy truck for a few yrs, didn't improve performance or fuel economy. Think I'll stick to the OEM filters on my classic car.
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davisadm
All-Star Author
Los Angeles
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Message Posted: Apr 15, 2013 11:24:28 AM
Yes, because it was installed when I purchased the car.
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weddy11
Champion Author
Phoenix
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Message Posted: Apr 15, 2013 10:05:33 AM
No
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