K&N vs OEM air filter testing

[FoMoCoSHO]

http://www.greenfilterusa.com/features-and-benefits.php

Deep pleats in the double-layered cotton create a 10-15% increase in filtration surface. This increase allows a greater volume of air to move more freely into your engine cylinders while maintaining superior filtration. Our specially designed cotton filter traps particles as small as 5 microns."

Besides the 5 micron claim I really don't see much info about the filters most important job, filtration.

I don't understand the clams of higher flow with better fuel economy. If I have more air at any given throttle position the ECM is going to add fuel to hit my AFR target. Right? Or am I missing something?

 

[FoMoCoSHO]

r2c performance...still reading about their tech but this is looking like a possible option. If it filters as well as they claim this would pair well with an Mdesign intake. I wonder if they will sell it with a no filter option?

http://www.r2cperformance.com/black-hex-series-conical-filters.aspx

http://www.r2cperformance.com/technology/r2c_filter_technology.aspx

Another very promising option would be the Donaldson Powercore but that would require a custom mounting solution.

http://www.donaldsonoemfiltration.com/library/files/documents/pdfs/059806.pdf

 

[paokara777]

"f I have more air at any given throttle position the ECM is going to add fuel to hit my AFR target. Right? Or am I missing something?"

I think you're right to a certain extent, i think the school of thought is, more air = more power, which means you need less throttle to get the same cruising speed which lowers MPG.

My cousin, who builds old carb chev engines once told me - Gasoline doesn't make the power, the AIR does.


Having said that, you are correct, wouldn't more air mean the ECM would need to adjust to add more fuel? So we are back at square 1 with power / economy

 

[SHOdded]

Fuel economy would be affected by trans gear ratios and engine speeds required to achieve any given power level, I'd think.  The PCM does need to understand the airflow range it can expect to enter the system though, to be able to cope with the fueling needs.

 

[slurppie]

Hiflow, hi filtration blah blah blah. Found a compromise, just need someone to fab an airbox.

sent from my speak n' spell using tin cans and string

 

[MightBeASynth]

Here you go 1000CFM rated


http://hydrobuilder.com/intake-filter-10-x-16-1000-cfm.html?utm_source=google&utm_medium=shopping&utm_campaign=701285&gclid=Cj0KEQjwgJq-BRCFqcLW8_DU9agBEiQAz8KohzdvFOf6CE1I08oIr4QdL3_6UMFf1L0AQ0N_2NseSHoaAh8C8P8HAQ


Just need to look toward industrial applications and then build a massive hood scoop.

 

[Gjkrisa]

http://www.greenfilterusa.com/features-and-benefits.php

Deep pleats in the double-layered cotton create a 10-15% increase in filtration surface. This increase allows a greater volume of air to move more freely into your engine cylinders while maintaining superior filtration. Our specially designed cotton filter traps particles as small as 5 microns."

Besides the 5 micron claim I really don't see much info about the filters most important job, filtration.

I don't understand the clams of higher flow with better fuel economy. If I have more air at any given throttle position the ECM is going to add fuel to hit my AFR target. Right? Or am I missing something?

Engine load will be lower getting better gas mileage

Sent from my Nexus 6P using Tapatalk

 

[Gjkrisa]

Here you go 1000CFM rated


http://hydrobuilder.com/intake-filter-10-x-16-1000-cfm.html?utm_source=google&utm_medium=shopping&utm_campaign=701285&gclid=Cj0KEQjwgJq-BRCFqcLW8_DU9agBEiQAz8KohzdvFOf6CE1I08oIr4QdL3_6UMFf1L0AQ0N_2NseSHoaAh8C8P8HAQ


Just need to look toward industrial applications and then build a massive hood scoop.

Sounds great to me

r2c performance...still reading about their tech but this is looking like a possible option. If it filters as well as they claim this would pair well with an Mdesign intake. I wonder if they will sell it with a no filter option?

http://www.r2cperformance.com/black-hex-series-conical-filters.aspx

http://www.r2cperformance.com/technology/r2c_filter_technology.aspx

Another very promising option would be the Donaldson Powercore but that would require a custom mounting solution.

http://www.donaldsonoemfiltration.com/library/files/documents/pdfs/059806.pdf

Sent from my Nexus 6P using Tapatalk

 

[metroplex]

The OP's link is from the Arlen Spicer test, which I believe was done in 2004 or earlier. The Amsoil used in that test no longer exists in that configuration and has been improved almost a decade ago IIRC... It's still a good read.

The K&N looks to have 40 pleats, while the Green has 35 pleats if I counted correctly. But the Green filter looks like someone who was drunk put it together. The pleats are all misaligned with splotches of polyurethane on some of the pleats, and I can see some mesh being exposed as well. I'm not saying K&N is always great, I've had to return a K&N because there was a hole in the polyurethane that would allow dirt to bypass the cotton.

If you want to see a really thick aftermarket filter, look at the AEM Dry Flow. They make one for the Duratec/SHO. I bought one for my GM LNF stock airbox but it was so thick to the point it was more restrictive than the factory filter (which is unique in its design) because it was so thick and extended too low in the box.

How well does the K&N seal in the stock SHO airbox? I've read reviews complaining about it being too thick/tight, and then some reviews say it goes in smoothly. Any long-term results with the Green filter? How good is it?

 

[paokara777]

I recently purchased a K&N filter and it fit pretty good

 

[metroplex]

How did it fit in your box? I bought 2 recently and none fit properly. They were a tad small.

 

[paokara777]

I'll take a photo of it tonight when i get home and post here

 

[metroplex]

I'm not sure photos would help. I actually measured the airbox, stock paper filter, and the K&N filters. The K&N filters were slightly smaller and I could feel the difference once they were in the airbox as well. That said, it should be *fine* to use but I was not satisfied with the fit or quality. If you want to see a well made filter, look at the AEM or AFE panel filters. The AFE is a bit longer for some reason. I saw one test where the AEM barely flowed better than paper, probably because of its filtration.

If you want to see a filter that is worse than K&N, check out Green Filter. It's like the machine was completely drunk when it rolled the pleats, and the filtration media is worthless on the Green hence why it outflows everything else.

 

[paokara777]

LOL I'm glad I didn't go the Green Filter then, I was tossing up between the two before I finally just got the K&N

The K&N filter as far as I recall, fit snug.

However, My SHO is a 2010 - maybe the air boxes changed a bit in the GEN2 SHOs