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High flow intake, does it also filter ?

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Old Aug 22, 2005 | 08:00 PM
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Default High flow intake, does it also filter ?

Do you guys have any concerns regarding the filtering performance of the high flow / cold air intakes ?

Here is one test that hammers K&N:

http://tinyurl.com/692ma
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Old Aug 22, 2005 | 08:19 PM
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Particulate ingestion and wear / performance issues are not addressed. If I was looking for a hepafilter this eval would be more significant. Changing your oil more often will have more of an effect on longevity /performance.

Nice charts though!

Last edited by Steve Germany; Aug 22, 2005 at 08:26 PM.
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Old Aug 22, 2005 | 11:39 PM
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Man! Is that discouraging.
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Old Aug 23, 2005 | 04:40 AM
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Originally Posted by Pio
Man! Is that discouraging.
Not at all. I'd call it highly encouraging. It shows that GM knows its business. AC Delco make the best filters, and they come stock on our cars. Yes, they are more restrictive than oiled gauze, but realize that 6 inches of H2O is only 1/64th of an atmosphere, in other words a relatively tiny restriction. But they do block a lot more dirt, passing only 0.4 gram in 60 minutes versus 7 grams in 24 minutes for the K&N. 7 grams is a huge amount of dirt to be ingesting into an engine every 24 minutes of operation.

Last edited by shopdog; Aug 23, 2005 at 04:42 AM.
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Old Aug 24, 2005 | 01:36 PM
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More air = more dirt to your engine, not worth of 3% power increase ?

I guess I'm gonna stick with original paper filters.
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