K&N intakes...bad? - Toyota Yaris Forums

SLIK4 · 05-23-2007, 06:27 PM

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.

RShatchback · 05-23-2007, 06:34 PM

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

PetersRedYaris · 05-24-2007, 12:35 AM

They are better than stock, but probably not the best available. I've had good luck with them.

Yaris Revenge · 05-25-2007, 11:30 AM

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

RogueYaris · 05-26-2007, 03:00 AM

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.

Katana · 05-26-2007, 08:58 AM

Not great.

RogueYaris · 05-26-2007, 06:35 PM

Quote:

Originally Posted by Katana

Not great.

care to elaborate?

Katana · 05-27-2007, 05:19 PM

Quote:

Originally Posted by RogueYaris

care to elaborate?

Always

.

I think that the AEM is the best.In my opinion K&N allows more dust in the engine.

RogueYaris · 05-31-2007, 07:23 PM

Quote:

Originally Posted by Katana

Always

.

I think that the AEM is the best. In my opinion K&N allows more dust in the engine.

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?

JDM_EK3 · 06-02-2007, 02:47 PM

Quote:

Originally Posted by Katana

I think that the AEM is the best.In my opinion K&N allows more dust in the engine.

You do realize AEM uses K&N Filters correct?

acdaazn · 06-04-2007, 03:55 PM

Quote:

Originally Posted by JDM_EK3

You do realize AEM uses K&N Filters correct?

Um.... You do realize that AEM are not oiled while K&Ns are, thus the term Dryflow?

blacksan · 05-26-2007, 06:43 PM

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.

Carvin'07 · 05-27-2007, 10:15 AM

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...

Vanderkitten · 05-29-2007, 03:16 AM

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.

Kaotic Lazagna · 05-29-2007, 04:07 AM

i've heard that they don't do crap (the drop in ones), and what was previously mentioned (about the dirt).

RogueYaris · 05-31-2007, 07:21 PM

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.

Spades · 06-04-2007, 03:33 PM

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...

RogueYaris · 06-04-2007, 03:47 PM

Quote:

Originally Posted by Spades

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...

foam/fabric air filters? is there any other kind?

05-23-2007, 06:27 PM	#1
SLIK4 Michael Drives: 07 Silver Yaris Sedan Join Date: May 2007 Location: Clearwater, Kansas Posts: 281	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.

05-25-2007, 11:30 AM	#4
Yaris Revenge GIGA...DRILL...BREAKER!!! Drives: Lagann. ;P Join Date: Feb 2006 Location: My own little world. Posts: 717	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 __________________ Be polite. Be professional. But have a plan to kill everyone you meet.

05-26-2007, 08:58 AM	#6
Katana Drives: Yaris LB 1.3lt 06 Join Date: Aug 2006 Location: Under the hood! Posts: 1,124	Not great. __________________ It's not the ride, it's the rider!

05-27-2007, 10:15 AM	#13
Carvin'07 Selling all mods View User's Garage Drives: '07 Bayou Blue - totally stock Join Date: Jul 2006 Location: Ottawa Posts: 129	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

05-29-2007, 03:16 AM	#14
Vanderkitten Drives: 2007 Yaris Hatchback Join Date: May 2007 Location: Berkeley, CA Posts: 243	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. __________________ Dave V- Creator-Vanderkitten- Clothing for Women Who Kick Ass! Many thanks to our sponsors: Weapon-R http://weapon-r.com Megan Racing http://www.meganracing.com Les Schwab Tires http://www.lesschwab.com 317 graphics http://www.317graphics.com

05-23-2007, 06:34 PM	#2
RShatchback Drives: 07 yaris liftback Join Date: Mar 2007 Location: NY Posts: 220	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

05-24-2007, 12:35 AM	#3
PetersRedYaris View User's Garage Drives: 2005 Scion xB Join Date: Nov 2006 Location: The Black Hills of South Dakota Posts: 1,059	They are better than stock, but probably not the best available. I've had good luck with them.

05-26-2007, 03:00 AM	#5
RogueYaris View User's Garage Drives: 2015 Abs Red Join Date: Nov 2006 Location: JAX Posts: 374	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.

05-26-2007, 06:43 PM	#12
blacksan Drives: 07 Bayou Blue Liftback Join Date: Apr 2007 Location: Virginia Posts: 1,121	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.

05-29-2007, 04:07 AM	#15
Kaotic Lazagna View User's Garage Drives: '14 GT86, '08 Vitz Join Date: Dec 2006 Location: Central Valley, CA Posts: 9,873	i've heard that they don't do crap (the drop in ones), and what was previously mentioned (about the dirt).

05-31-2007, 07:21 PM	#16
RogueYaris View User's Garage Drives: 2015 Abs Red Join Date: Nov 2006 Location: JAX Posts: 374	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.

06-04-2007, 03:33 PM	#17
Spades The Hated One View User's Garage Drives: 07 White Manual Sedan Join Date: Sep 2006 Location: Oregon,USA Posts: 390	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... __________________

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Any Aftermarket Intakes Yet?!?!?!?!	silverRS	Performance Modifications	120	12-07-2011 06:44 PM
Intake Systems Decision Maker..	Blenjar	Performance Modifications	25	09-15-2007 10:07 PM
air intakes?	SLIK4	General Yaris / Vitz Discussion	16	05-21-2007 09:34 PM
Install a Yaris deck into a Matrix... bad idea?? Help needed!!	SimmZ	In Car Entertainment + Electronics (audio / video / alarm)	4	12-17-2006 01:01 AM
REALLY BAD CAR ACCIDENT!	MacMaster761	General Yaris / Vitz Discussion	25	11-30-2006 11:20 AM