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05-23-2007, 06:27 PM | #1 |
Michael
Drives: 07 Silver Yaris Sedan Join Date: May 2007
Location: Clearwater, Kansas
Posts: 281
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K&N intakes...bad?
i have heard several things about k&n filters not being very good. they apparently get great airflow but they get that great airflow because of the filter holes being too big causing horrible filtration which is the main object to a filter. is this true? if so which brand do u recommend. thanx for the help.
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05-23-2007, 06:34 PM | #2 |
Drives: 07 yaris liftback Join Date: Mar 2007
Location: NY
Posts: 220
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I've never heard anything bad about k&N, to me - on such a low horsepower car i wasnt searching around for an intake that picked up one or two "alleged" horsepower compared to another. But you'll hear different opinions from different people. I'm sure it will be a matter of moments before someone posts a reply for you to wait for the intake a board member is making..which you can follow the progress of yourself a few posts down in the performance forum...good luck
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05-24-2007, 12:35 AM | #3 |
Drives: 2005 Scion xB Join Date: Nov 2006
Location: The Black Hills of South Dakota
Posts: 1,059
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They are better than stock, but probably not the best available. I've had good luck with them.
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05-25-2007, 11:30 AM | #4 |
GIGA...DRILL...BREAKER!!!
Drives: Lagann. ;P Join Date: Feb 2006
Location: My own little world.
Posts: 717
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Slik, I've read that same thing in some motorcycle forums... customers discovering a layer of dirt inside the intake that had made its way past the filter.
I have a K&N on my Vibe, but I've never pulled everything apart to see for myself. I put it on not long after purchase, and have never had any engine-related problems in the now 125k miles. You're supposed to replace them at some point, but I just keep cleaning and re-oiling. I'm 'bout ready to sell anyway, so I'm not worried about it. ~YR
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05-26-2007, 03:00 AM | #5 |
well i just ordered my k&n today so it should be here next week all ready for me to drop in the oem box. i had never heard anything anywhere stating that a crapload of stuff gets past them. we'll see.
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05-26-2007, 08:58 AM | #6 |
Not great.
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05-26-2007, 06:35 PM | #7 |
05-26-2007, 06:43 PM | #8 |
Drives: 07 Bayou Blue Liftback Join Date: Apr 2007
Location: Virginia
Posts: 1,121
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I used K&N's (single filters on each carb) on my motorcycles years ago. There overall quality started to go down hill and I stopped. I believe that they started to sub they product out which caused the problem. To be honest I have not tried any of there new stuff, but it shore doesn't look as well constructed as the stuff I was using back in the day.
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05-27-2007, 10:15 AM | #9 |
Selling all mods
Drives: '07 Bayou Blue - totally stock Join Date: Jul 2006
Location: Ottawa
Posts: 129
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I have used K&N filters in ALL of my cars over the past 15 years with no problems at all. Just be vigilant with your cleaning. I usually clean mine twice per year depending on how dirty the filter is.
85 Nissan Micra 1.2L carb'ed + 2.5" Dynomax exhaust -installed at 220,000kms, sold in good running condition (passed E-test) at 340,000kms 90 Grand Prix 3.1 MPFI stock -installed at 80,000kms, sold in good running condition at 196,000kms 2000 Corolla Injen SRI + K&N cone -installed at 3600kms, sold in excellent running condition at 110,000kms 1992 Talon AWD TSi K&N cone + moderately modified -installed at 220,000kms, sold in good running (& fast!) condition at 265,000kms 2000 Legacy GT wagon stock -installed at 113,000kms, still going strong at 184,000kms 116,000 106,400 45,000 71,000 _______+ = 338,400kms in total combined so far... Last edited by Carvin'07; 05-27-2007 at 10:24 AM. Reason: added mileage |
05-27-2007, 05:19 PM | #10 |
Always .
I think that the AEM is the best.In my opinion K&N allows more dust in the engine.
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05-29-2007, 03:16 AM | #11 |
Drives: 2007 Yaris Hatchback Join Date: May 2007
Location: Berkeley, CA
Posts: 243
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I think when cleaned and properly oiled they work well... although the K&N intake on my 2000 Nissan Frontier actually LOST power... the Neuspeed on my Jetta GLi used a K&N filter, that always fell off (nice feature) and on my motorcycles they always seemed to do the trick.
I like the foam/oil dirtbike style filters.
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05-29-2007, 04:07 AM | #12 |
Drives: '14 GT86, '08 Vitz Join Date: Dec 2006
Location: Central Valley, CA
Posts: 9,873
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i've heard that they don't do crap (the drop in ones), and what was previously mentioned (about the dirt).
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05-31-2007, 07:21 PM | #13 |
I got my shipment today and dropped it in. I had to wipe the excess oil off of it first, there was more than enough on there. I'm wondering if someone at the plant thought it might dry out on it's way to wherever. I'm not sure if it's all in my head or not but it does seem to have a slight (ever so slight) improvement in throttle response, and HP. As for the dirt, etc getting in there, we'll see how it does when it comes time to check it.
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05-31-2007, 07:23 PM | #14 |
Where do you get this opinion from? I am just curious if you've taken apart an engine that once used a K&N filter or did some testing. Are you getting your opinion from what you've read on the internet or heard whilst passing by someone at an autoshow?
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06-02-2007, 02:47 PM | #15 |
Drives: 2006 Toyota Yaris RS Join Date: Feb 2007
Location: Manitoba, Canada
Posts: 58
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06-04-2007, 03:33 PM | #16 |
The Hated One
Drives: 07 White Manual Sedan Join Date: Sep 2006
Location: Oregon,USA
Posts: 390
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alot of foam/fabric air filters DO allow dust and grime into the engine...pull your intake off and look at the throttlebody after 10k miles...
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06-04-2007, 03:47 PM | #17 |
06-04-2007, 03:55 PM | #18 |
Drives: Toyota Join Date: Apr 2007
Location: NJ
Posts: 81
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Um.... You do realize that AEM are not oiled while K&Ns are, thus the term Dryflow?
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