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

ImportConvert · 02-29-2012, 02:31 PM

Just curious if anyone wants to weigh in here who has actual physical evidence for or against their use, regarding premature wear/lack of filtration, or not.

m4a1mustang · 02-29-2012, 02:33 PM

Red__Zed put up some good numbers on this topic in another thread.

sfearl1 · 02-29-2012, 02:54 PM

these are the filters i run from Cosworth. check the specs:

Reduced restriction (10%+ compared to OE filters)
Over 98% efficiency (*ISO5011:200 Fine Dust Test)

Performance Air Filter - Performance Air Filter - Cosworth USA

m4a1mustang · 02-29-2012, 02:55 PM

I just ordered one of the Cosworth filters for my S2k.

Nick911sc · 02-29-2012, 03:03 PM

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

dmatt · 02-29-2012, 03:11 PM

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

sfearl1 · 02-29-2012, 03:13 PM

Quote:

Originally Posted by dmatt

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

this.

Nick911sc · 02-29-2012, 03:14 PM

So for what it's worth, would you say the Cosworth's + Post MAF Tubes are going to net the same as the K&N + Post MAF's?

Red__Zed · 02-29-2012, 03:15 PM

Quote:

Originally Posted by m4a1mustang

Red__Zed put up some good numbers on this topic in another thread.

That guy just makes stuff up.

m4a1mustang · 02-29-2012, 03:17 PM

Quote:

Originally Posted by Red__Zed

That guy just makes stuff up.

Well could you repost your fake numbers here. I thought they were interesting.

sfearl1 · 02-29-2012, 03:18 PM

Quote:

Originally Posted by Nick911sc

So for what it's worth, would you say the Cosworth's + Post MAF Tubes are going to net the same as the K&N + Post MAF's?

i used Cosworth on my Evo X bc it outperformed the K&N's.

that should be a solid setup you have listed there.

Red__Zed · 02-29-2012, 03:27 PM

Quote:

Originally Posted by m4a1mustang

Well could you repost your fake numbers here. I thought they were interesting.

I just adjusted the representation of the numbers to be easier to read....

Quote:

Originally Posted by Red__Zed

Hell, no need to imagine. Here you go

Nick911sc · 02-29-2012, 03:28 PM

So what is that telling me compared to the Cosworth's? lol

m4a1mustang · 02-29-2012, 03:30 PM

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.

Speedy · 02-29-2012, 03:32 PM

For what it's worth I tested K&N Filters years ago in a Toyota Tacoma vs. stock and AEM dry filters.

The only way I could think to test filtration ability was silicone content in the resulting oil analysis.

After 5,000 miles the K&N filter oil analysis had more silicone than either stock or AEM dry filter.

Tests were in the stock air box in that truck.

Driving conditions were the same in all tests as well.

Having said that, the difference wasn't HUGE at all, but there was a slight difference.

02-29-2012, 02:31 PM	#1 (permalink)
ImportConvert A True Z Fanatic Join Date: Jun 2010 Location: SWMO Posts: 4,454 Drives: 2019 CX5 GT Reserve Rep Power: 7626	K&N filters...yay or nay? (from a filtration standpoint) Just curious if anyone wants to weigh in here who has actual physical evidence for or against their use, regarding premature wear/lack of filtration, or not.

02-29-2012, 02:33 PM	#2 (permalink)
m4a1mustang A True Z Fanatic Join Date: Feb 2009 Location: Northern VA Posts: 55,385 Drives: on two wheels Rep Power: 6962	Red__Zed put up some good numbers on this topic in another thread. __________________ - Steve Zs & Coffee - Saturdays at 10AM in Fairfax, VA and Columbia, MD (Click the banner!) LIKE us on Facebook!

02-29-2012, 02:54 PM	#3 (permalink)
sfearl1 A True Z Fanatic Join Date: Oct 2011 Location: St. Louis Posts: 2,300 Drives: 2013 FBO E85 GTR Rep Power: 17	these are the filters i run from Cosworth. check the specs: Reduced restriction (10%+ compared to OE filters) Over 98% efficiency (ISO5011:200 Fine Dust Test) Performance Air Filter - Performance Air Filter - Cosworth USA __________________ Scott*

02-29-2012, 02:55 PM	#4 (permalink)
m4a1mustang A True Z Fanatic Join Date: Feb 2009 Location: Northern VA Posts: 55,385 Drives: on two wheels Rep Power: 6962	I just ordered one of the Cosworth filters for my S2k. __________________ - Steve Zs & Coffee - Saturdays at 10AM in Fairfax, VA and Columbia, MD (Click the banner!) LIKE us on Facebook!

02-29-2012, 03:11 PM	#6 (permalink)
dmatt Base Member Join Date: May 2011 Location: Hurricane, UT Posts: 217 Drives: 2016 370Z Nismo Tech Rep Power: 14	I use Cosworth's as well; it requires no oiling. __________________ CURRENT - 2016 NISMO TECH \| PEARL WHITE \| MOWERAXLE \| GTR START \| K & N \| PAST - 2011 NISMO \| KW V3'S \| HOTCHKIS \| SPL \| AKRAPOVIC EVO CF \| VERTINI 19x9.5 & 19x11 \| HANKOOK V12'S 255/35 & 305/30 \| MOWERAXLE \|

02-29-2012, 03:03 PM	#5 (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 what's the difference between the Cosworth's and K&N's?

02-29-2012, 03:14 PM	#8 (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 for what it's worth, would you say the Cosworth's + Post MAF Tubes are going to net the same as the K&N + Post MAF's?

02-29-2012, 03:28 PM	#13 (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 what is that telling me compared to the Cosworth's? lol

02-29-2012, 03:30 PM	#14 (permalink)
m4a1mustang A True Z Fanatic Join Date: Feb 2009 Location: Northern VA Posts: 55,385 Drives: on two wheels Rep Power: 6962	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. __________________ - Steve Zs & Coffee - Saturdays at 10AM in Fairfax, VA and Columbia, MD (Click the banner!) LIKE us on Facebook!

02-29-2012, 03:32 PM	#15 (permalink)
Speedy Enthusiast Member Join Date: Jan 2012 Location: TN Posts: 390 Drives: check my signature Rep Power: 13	For what it's worth I tested K&N Filters years ago in a Toyota Tacoma vs. stock and AEM dry filters. The only way I could think to test filtration ability was silicone content in the resulting oil analysis. After 5,000 miles the K&N filter oil analysis had more silicone than either stock or AEM dry filter. Tests were in the stock air box in that truck. Driving conditions were the same in all tests as well. Having said that, the difference wasn't HUGE at all, but there was a slight difference.

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