K&N filters...yay or nay? (from a filtration standpoint)

Nick911sc · 02-29-2012, 04:33 PM

So the Cosworth's should perform as well but let less debris through?

Red__Zed · 02-29-2012, 04:35 PM

Quote:

Originally Posted by Nick911sc

So the Cosworth's should perform as well but let less debris through?

You'd need to directly compare flow data, I don't have flow numbers for either.

ZMan8 · 02-29-2012, 04:37 PM

Interesting....

So for engine longevity, would people say its better to just stick to more restrictive (no power gains)

fuct · 02-29-2012, 04:42 PM

Quote:

Originally Posted by dmatt

I use Cosworth's as well; it requires no oiling.

the K&N's dont either

m4a1mustang · 02-29-2012, 04:43 PM

Quote:

Originally Posted by fuct

the K&N's dont either

Pretty sure K&N doesn't make a dry filter?

ZMan8 · 02-29-2012, 04:43 PM

Quote:

Originally Posted by fuct

the K&N's dont either

I thought they are oil based

m4a1mustang · 02-29-2012, 04:44 PM

If you ran a K&N filter without oil it'd let everything in just about.

sfearl1 · 02-29-2012, 04:44 PM

edit: m4a1 beat me to it. ^^

Quote:

Originally Posted by fuct

the K&N's dont either

if i'm not mistaken, K&N's are oiled out of the box. they may not "require" oiling, however, that's how the filter traps dirt and dust. no oil on the K&N = no filtration, from my understanding.

ZMan8 · 02-29-2012, 04:45 PM

you wash them and reoil every 30-50k miles depending on where you live/driving habits etc.

m4a1mustang · 02-29-2012, 04:45 PM

Quote:

Originally Posted by sfearl1

edit: m4a1 beat me to it. ^^

if i'm not mistaken, K&N's are oiled out of the box. they may not "require" oiling, however, that's how the filter traps dirt and dust. no oil on the K&N = no filtration, from my understanding.

Exactly. After it gets dirtied the filter must be cleaned, dried, and re-oiled.

fuct · 02-29-2012, 05:14 PM

Quote:

Originally Posted by m4a1mustang

Exactly. After it gets dirtied the filter must be cleaned, dried, and re-oiled.

Yes yes thats what i meant... sorry for the confusion.

KB2 · 02-29-2012, 05:32 PM

i have the AFE dry flow-s filters...im pretty sure is what they are called.

i dunno how great or terrible they are,but i like them

ImportConvert · 02-29-2012, 05:53 PM

Quote:

Originally Posted by Nick911sc

So what's the difference between the Cosworth's and K&N's?

Cosworth is disposale (you have to buy new one's at regular service intervals).

I think K&N flows more than 10% over OEM.

The K&N and Cosworth both claim around 98% (K&N states 96-99% is what their filters normally test, obviously variance exists).

K&N Air Filter Efficiency Testing

ImportConvert · 02-29-2012, 05:55 PM

Quote:

Originally Posted by m4a1mustang

It's just showing you the number of defects per millions of opportunities given specific filtration rates. If Cosworth is at 98%+ you can see where it'd fit in.

Where did you get this? Is this a table created from the diesel-forums test a while back?

sfearl1 · 02-29-2012, 05:56 PM

i read somewhere that Cosworth said you can vacuum the filter and it'll be good-to-go.

02-29-2012, 04:37 PM	#18 (permalink)
ZMan8 A True Z Fanatic Join Date: Oct 2011 Location: Chicago, IL Posts: 5,844 Drives: 10 370z 40th M6 Rep Power: 659	Interesting.... So for engine longevity, would people say its better to just stick to more restrictive (no power gains) __________________ 2010 370Z 40 Anniv., 6 MT \| Fast Intentions \| Swift Springs \| SPC \| Z1Motorsports \| JWM \| Redline Oils \| 35% Window Tint 2015 Mazda6 \| 370ZChicago: Chicago Area Cars & Coffee

02-29-2012, 04:44 PM	#22 (permalink)
m4a1mustang A True Z Fanatic Join Date: Feb 2009 Location: Northern VA Posts: 55,385 Drives: on two wheels Rep Power: 6962	If you ran a K&N filter without oil it'd let everything in just about. __________________ - Steve Zs & Coffee - Saturdays at 10AM in Fairfax, VA and Columbia, MD (Click the banner!) LIKE us on Facebook!

02-29-2012, 04:45 PM	#24 (permalink)
ZMan8 A True Z Fanatic Join Date: Oct 2011 Location: Chicago, IL Posts: 5,844 Drives: 10 370z 40th M6 Rep Power: 659	you wash them and reoil every 30-50k miles depending on where you live/driving habits etc. __________________ 2010 370Z 40 Anniv., 6 MT \| Fast Intentions \| Swift Springs \| SPC \| Z1Motorsports \| JWM \| Redline Oils \| 35% Window Tint 2015 Mazda6 \| 370ZChicago: Chicago Area Cars & Coffee

02-29-2012, 05:56 PM	#30 (permalink)
sfearl1 A True Z Fanatic Join Date: Oct 2011 Location: St. Louis Posts: 2,300 Drives: 2013 FBO E85 GTR Rep Power: 18	i read somewhere that Cosworth said you can vacuum the filter and it'll be good-to-go. __________________ Scott

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
FS - K&N Filters	cab83_750	Parts for sale (Private Classifieds)	1	12-15-2010 06:24 AM
K&N Air Filters for HR Z/G	kuhan	Parts for sale (Private Classifieds)	5	11-16-2010 09:05 PM
From a performance standpoint...	darrinps	Intake/Exhaust	5	10-02-2010 09:33 AM
Wix air filters?	import111	Intake/Exhaust	6	04-11-2010 03:35 PM
K & N Filters	NyCSnEaK	Parts for sale (Private Classifieds)	4	03-08-2010 06:31 PM

02-29-2012, 04:33 PM	#16 (permalink)
Nick911sc A True Z Fanatic Join Date: Feb 2009 Location: Long Island, New York Posts: 1,698 Drives: 2010 Nissan GT-R Rep Power: 20	So the Cosworth's should perform as well but let less debris through?

02-29-2012, 05:32 PM	#27 (permalink)
KB2 Base Member Join Date: Apr 2010 Location: Illinois Posts: 243 Drives: 370z Rep Power: 15	i have the AFE dry flow-s filters...im pretty sure is what they are called. i dunno how great or terrible they are,but i like them