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Old 11-25-2013, 02:17 PM   #1
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Trade-offs of running a high performance air filter on your MK3

"Compared to the AC, the K&N “plugged up” nearly 3 times faster, passed 18 times more dirt and captured 37% less dirt. See the data tables for a complete summary of these comparisons."

http://forums.nicoclub.com/debunking...r-t180100.html

This chart is the scary one. We know that less restriction is good for power but just how much dirt comes with it?


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Use a Motorcraft FL-400S filter to increase filtration media and oil quantity. (Drop in for FL-910S)

Synthetic oil in GDI engines
www.focusfanatics.com/forum/showthread.php?t=324396

Last edited by wavsine; 11-28-2013 at 02:39 PM.
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Old 11-25-2013, 07:13 PM   #2
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That test is pouring dust in at an astronomical rate. Has little to do with a real world application other than if you live in some super dusty area where wind borne dust is a constant problem.
With the EPA and all, I never see any dust in my town. Maybe a trace of salt residue blown up off freeways in winter. Or around current construction sites.

Anyway, I used a K&N filter for over 100,000 miles on my last car (1999 SVT Contour) and would say the engine was as good as it could be after the 100,000 miles.

I plan on keeping my 2012 for at least ten years, and have ZERO qualms about using the K&N air filter on it. And expecting the engine to last with no problems of wear caused by the lack of filtration from the K&N.

Mainly the dust getting past the K&N is very fine particles. They will burn in the combustion and be blown out as soot.
Actually the one place the soot might make a problem is in the catalytic converters.. possibly accumilating there?

Anyway I have no problem running a K&N. The known benefits outweigh any imaginary issues.
Then no one has complained "MY engine is ruined because the rings wore out from all the dirt the K&N let in"

Where have you read that? no where. It does not happen. If it WAS a problem plenty of folks would be screaming about it all the time. You know the internet. 100 happy folks not a peep. one disgruntled person and a thousand posts complaining..
So all in all I am perfectly happy with my K&N.
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Old 11-25-2013, 08:07 PM   #3
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Yup^ she's right on all accounts. K&n wouldn't spend $$$$$on r&d to ruin your car
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Old 11-26-2013, 12:07 AM   #4
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https://web.archive.org/web/20041009...011/SPICER.htm

There is the original test data from the author.
Do keep in mind that the data is going on 10 years old and that is is specific to the the Chevy Duramax of the era. Filter design and requirements do vary from MFG to MFG.
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Old 11-26-2013, 10:20 AM   #5
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Quote:
Originally Posted by Elizabeth View Post
That test is pouring dust in at an astronomical rate. Has little to do with a real world application other than if you live in some super dusty area where wind borne dust is a constant problem.
With the EPA and all, I never see any dust in my town. Maybe a trace of salt residue blown up off freeways in winter. Or around current construction sites.

Anyway, I used a K&N filter for over 100,000 miles on my last car (1999 SVT Contour) and would say the engine was as good as it could be after the 100,000 miles.

I plan on keeping my 2012 for at least ten years, and have ZERO qualms about using the K&N air filter on it. And expecting the engine to last with no problems of wear caused by the lack of filtration from the K&N.

Mainly the dust getting past the K&N is very fine particles. They will burn in the combustion and be blown out as soot.
Actually the one place the soot might make a problem is in the catalytic converters.. possibly accumilating there?

Anyway I have no problem running a K&N. The known benefits outweigh any imaginary issues.
Then no one has complained "MY engine is ruined because the rings wore out from all the dirt the K&N let in"

Where have you read that? no where. It does not happen. If it WAS a problem plenty of folks would be screaming about it all the time. You know the internet. 100 happy folks not a peep. one disgruntled person and a thousand posts complaining..
So all in all I am perfectly happy with my K&N.
Stock Filter
381.8HP 372.2TQ (1st run)
375.1HP 371.9TQ (2nd run)
376.1HP 369.3TQ (3rd run)

K&N Filter
377.2HP 368.5TQ (1st run)
373.0HP 363.7TQ (2nd run)
368.0HP 361.7TQ (3rd run)

What may be imaginary are hp gains.

http://www.svtperformance.com/forums...lter-test.html
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Use a Motorcraft FL-400S filter to increase filtration media and oil quantity. (Drop in for FL-910S)

Synthetic oil in GDI engines
www.focusfanatics.com/forum/showthread.php?t=324396
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Old 11-26-2013, 11:24 AM   #6
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It is important to likely add this text from what you quoted the numbers from:
"I believe it’s safe to say that at the very least you will not see a tangible power gain with simply a drop-in filter. However, that’s not really the purpose of that type of filter. It is intended help save you money by being washable and reusable instead of disposable like the stock filter. Whether you’ll own your vehicle long enough recoup the initial investment is a question of usage. If you rack up a lot of miles or drive in dusty conditions a drop-in K&N filter may be worth it for you, but not if you’re looking for more power."
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Old 11-26-2013, 11:28 AM   #7
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Quote:
Originally Posted by Magus2727 View Post
If you rack up a lot of miles or drive in dusty conditions a drop-in K&N filter may be worth it for you, but not if you’re looking for more power."

If I drove in dusty conditions, K&N would be the worst air filter choice based on the empirical test data in the OP.
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Use a Motorcraft FL-400S filter to increase filtration media and oil quantity. (Drop in for FL-910S)

Synthetic oil in GDI engines
www.focusfanatics.com/forum/showthread.php?t=324396
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Old 11-26-2013, 11:30 AM   #8
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That is a direct quote from the same people who tested the SVT Mustang and whose dyno numbers your using. so if your questioning there assumptions/test/conclusions then can you agree with there data?

Also for a pure drop in the K&N might have shown a drop in performance but there short air intake with a K&N on it: http://www.svtperformance.com/forums...e-install.html

showed performance increase.
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Last edited by Magus2727; 11-26-2013 at 02:51 PM.
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Old 11-26-2013, 11:50 AM   #9
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My money says all after market so-called performance filters are junk they may actually damage your engine. Stick to good old paper filters and keep them dry and replace them every fey years and you are good to go.
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Old 11-26-2013, 02:15 PM   #10
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Facepalm*
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