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

dmatt · 02-29-2012, 05:02 PM

Cosworth's are not disposable, they can be washed and re-used.

Nick911sc · 02-29-2012, 05:07 PM

Quote:

Originally Posted by ImportConvert

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

I understand the literal difference between the two filters. I was wondering more along the lines about those dyno's people have posted with the K&N's.. Could it be assumed that the Cosworth's are going to net the same results?

m4a1mustang · 02-29-2012, 05:09 PM

There's no way to tell without actual flow data.

Nick911sc · 02-29-2012, 05:11 PM

Damn flow data

ImportConvert · 02-29-2012, 05:15 PM

I just got off the phone with Cosworth. Their filters seem to be stepchildren. Noone there knew a lot about them, and readily admitted that they made them "because some people can't afford Cosworth engines, and want a Cosworth part in their car, so we created a filter--everyone needs filters--to help start these people out with our products."

No flow-data aside the 10%+ was given. No dyno data was given. Filtration was stated as better than OEM paper. Service life was described to me as equal to or shorter than OEM, so stick to the OEM replacement schedule. Technically they claim it can be washed with soap and water as it is synthetic, but I don't really think it's the BEST course of action (personal opinion). Of course, I also would rather buy a new K&N than clean it, because of the over-oiling/risk of damaging the media.

Does anyone have any heads-up tests vs. K&N in an environment that shows either superior filtration or flow? (dyno, etc.)

ImportConvert · 02-29-2012, 05:16 PM

Quote:

Originally Posted by Nick911sc

I understand the literal difference between the two filters. I was wondering more along the lines about those dyno's people have posted with the K&N's.. Could it be assumed that the Cosworth's are going to net the same results?

K&N claims that they enhance flow by 20% or so, based on their panel-filter flow data. Cosworth claims 50% of that. Beyond that...I'm in the dark.

m4a1mustang · 02-29-2012, 05:16 PM

I always buy a new filter anyways. F*ck if I am going to waste my time cleaning and re-oiling or washing or whatever.

Nick911sc · 02-29-2012, 05:24 PM

Prior to this thread I was set on K&N, then I said oh cool, Cosworth, and now it's like...

no clue

sfearl1 · 02-29-2012, 05:44 PM

i don't have the time to find the dynos, but check over on the Evo X forums. testing on and off the dyno show this filter to be superior to the K&N. Jon Drenas at COBB socal puts his stamp of approval on it. i wouldn't have chosen it for either car if it was an inferior product.

Nick911sc · 02-29-2012, 05:48 PM

I actually looked at the Evo stuff and it makes me feel good about Cosworth, it's just difficult since all the info we have here is K&N users

sfearl1 · 02-29-2012, 05:55 PM

Fwiw, here's Cosworth vs. HKS on an Evo...

Alchemy · 02-29-2012, 06:31 PM

I take it Cosworth doesnt make a filter that would fit on my Gen 3's do they??

sfearl1 · 02-29-2012, 06:34 PM

i haven't seen one. aFe might though...

ImportConvert · 02-29-2012, 10:54 PM

Quote:

Originally Posted by Nick911sc

Prior to this thread I was set on K&N, then I said oh cool, Cosworth, and now it's like...

no clue

K&N--because I'll sell you a set.

Jordo! · 02-29-2012, 11:37 PM

Oiled cotton or synthetic dry works best, with slightly better flow on the oiled cotton at the cost of some filtration (slightly better for the dry). Both should flow and filter better than paper, so no worries.

Foam filters suck. The HKS is a foam filter.

I too just sell off the old for someone else to clean and purchase new ones. Less of a hassle.

based on my UOA's, which also measure particles that indicate poor air filtration, my K&N's work well.

02-29-2012, 05:02 PM	#31 (permalink)
dmatt Base Member Join Date: May 2011 Location: Hurricane, UT Posts: 217 Drives: 2016 370Z Nismo Tech Rep Power: 14	Cosworth's are not disposable, they can be washed and re-used. __________________ 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, 05:09 PM	#33 (permalink)
m4a1mustang A True Z Fanatic Join Date: Feb 2009 Location: Northern VA Posts: 55,385 Drives: on two wheels Rep Power: 6962	There's no way to tell without actual flow data. __________________ - Steve Zs & Coffee - Saturdays at 10AM in Fairfax, VA and Columbia, MD (Click the banner!) LIKE us on Facebook!

02-29-2012, 05:16 PM	#37 (permalink)
m4a1mustang A True Z Fanatic Join Date: Feb 2009 Location: Northern VA Posts: 55,385 Drives: on two wheels Rep Power: 6962	I always buy a new filter anyways. Fck if I am going to waste my time cleaning and re-oiling or washing or whatever. __________________ - Steve* Zs & Coffee - Saturdays at 10AM in Fairfax, VA and Columbia, MD (Click the banner!) LIKE us on Facebook!

02-29-2012, 05:24 PM	#38 (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	Prior to this thread I was set on K&N, then I said oh cool, Cosworth, and now it's like...no clue

02-29-2012, 05:44 PM	#39 (permalink)
sfearl1 A True Z Fanatic Join Date: Oct 2011 Location: St. Louis Posts: 2,300 Drives: 2013 FBO E85 GTR Rep Power: 17	i don't have the time to find the dynos, but check over on the Evo X forums. testing on and off the dyno show this filter to be superior to the K&N. Jon Drenas at COBB socal puts his stamp of approval on it. i wouldn't have chosen it for either car if it was an inferior product. __________________ Scott

02-29-2012, 05:11 PM	#34 (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	Damn flow data

02-29-2012, 05:15 PM	#35 (permalink)
ImportConvert A True Z Fanatic Join Date: Jun 2010 Location: SWMO Posts: 4,454 Drives: 2019 CX5 GT Reserve Rep Power: 7626	I just got off the phone with Cosworth. Their filters seem to be stepchildren. Noone there knew a lot about them, and readily admitted that they made them "because some people can't afford Cosworth engines, and want a Cosworth part in their car, so we created a filter--everyone needs filters--to help start these people out with our products." No flow-data aside the 10%+ was given. No dyno data was given. Filtration was stated as better than OEM paper. Service life was described to me as equal to or shorter than OEM, so stick to the OEM replacement schedule. Technically they claim it can be washed with soap and water as it is synthetic, but I don't really think it's the BEST course of action (personal opinion). Of course, I also would rather buy a new K&N than clean it, because of the over-oiling/risk of damaging the media. Does anyone have any heads-up tests vs. K&N in an environment that shows either superior filtration or flow? (dyno, etc.)

02-29-2012, 05:48 PM	#40 (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	I actually looked at the Evo stuff and it makes me feel good about Cosworth, it's just difficult since all the info we have here is K&N users

02-29-2012, 05:55 PM	#41 (permalink)
sfearl1 A True Z Fanatic Join Date: Oct 2011 Location: St. Louis Posts: 2,300 Drives: 2013 FBO E85 GTR Rep Power: 17	Fwiw, here's Cosworth vs. HKS on an Evo... __________________ Scott

02-29-2012, 06:31 PM	#42 (permalink)
Alchemy A True Z Fanatic Join Date: Jan 2009 Location: Jersey Age: 44 Posts: 4,855 Drives: to acquire tickets Rep Power: 3524	I take it Cosworth doesnt make a filter that would fit on my Gen 3's do they?? __________________ Ryan 314WHP \| 260LB-FT \| STILLEN \| KONI \| SWIFT \| STOPTECH \| Z1 \| PROJECT MU \| CNT \| UPREV \| FORGESTAR \| BRIDGESTONE \| PWJDM \| ENEOS \| MOTUL

02-29-2012, 06:34 PM	#43 (permalink)
sfearl1 A True Z Fanatic Join Date: Oct 2011 Location: St. Louis Posts: 2,300 Drives: 2013 FBO E85 GTR Rep Power: 17	i haven't seen one. aFe might though... __________________ Scott

02-29-2012, 11:37 PM	#45 (permalink)
Jordo! A True Z Fanatic Join Date: May 2010 Location: nirvana Posts: 6,394 Drives: 2023 NATM Rep Power: 418	Oiled cotton or synthetic dry works best, with slightly better flow on the oiled cotton at the cost of some filtration (slightly better for the dry). Both should flow and filter better than paper, so no worries. Foam filters suck. The HKS is a foam filter. I too just sell off the old for someone else to clean and purchase new ones. Less of a hassle. based on my UOA's, which also measure particles that indicate poor air filtration, my K&N's work well. __________________ Enjoy it. Destroy it. Last edited by Jordo!; 02-29-2012 at 11:39 PM.

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