Dirty air filter

Sep 23, 2012 | 11:35 AM

Ryan17406

Thread Starter

Newbie

Joined: Sep 2012

Posts: 6

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From: York,PA

W204

Dirty air filter

I recently bought a 2010 c300 sport 4matic and it felt sluggish, so I took the air box off and found dirt n leaves... Wth... So I dropped in k&n for $80 from pepboys.... Fitting it together was a little off on the edges but got it together... Big difference from them old dirty filters...

Sep 23, 2012 | 01:53 PM

kevink2

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Joined: Sep 2008

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From: Delaware

2004 Mazda6, 1993 RX7

Glad you got some power back.

I have not heard of anyone that did dyno work, or simple pressure drop measurements (that I have done on my tracked Rx7) for the oem system. Just a clean filter may very well have returned your lost power, with little help from the K&N filter.

.

Last edited by kevink2; Sep 24, 2012 at 01:53 PM.

Sep 23, 2012 | 03:03 PM

Domm

Super Member

Joined: Mar 2012

Posts: 591

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From: San Francisco

'08 Mercedes C300

The oem filters do not attract more dirt than the k&n filter. The cause of the build up is probably due to neglected maintenance.

Sep 23, 2012 | 03:57 PM

Carsy

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From: 1 hours drive north of Sydney Australia

2007 W204 220CDI Classic Sedan

I would not use anything else but oem. They are designed to do the job on this car. You are risking your engines longevity.

Sep 23, 2012 | 04:41 PM

Ryan17406

Thread Starter

Newbie

Joined: Sep 2012

Posts: 6

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From: York,PA

W204

dirty filter

does anybody know what this secondary filter is for.. it was a fabric type filter inside the cover...the filter covers(1), filter(2) and mysterious filters(3)...

Attached Thumbnails

Sep 23, 2012 | 11:55 PM

Knightmare69

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Joined: Mar 2006

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From: Hong Kong

2010 C200 CGI

Weird, it looks like the same material used for the cabin filter. This is the first time I've seen secondary filters. Even on the S-class v8's I never saw them when swapping out the filters. Must be a new thing. Is there a part number on them? You can prob cross reference them online.

Sep 24, 2012 | 12:09 AM

itsLoonie

Super Member

Joined: Nov 2008

Posts: 730

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From: CALIFORNIA

2012 E350 RWD

First time I've seen it too. Mine doesn't have that

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Sep 24, 2012 | 02:39 PM

kevink2

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Joined: Sep 2008

Posts: 1,331

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From: Delaware

2004 Mazda6, 1993 RX7

Quote:

Originally Posted by Ryan17406

does anybody know what this secondary filter is for.. it was a fabric type filter inside the cover...the filter covers(1), filter(2) and mysterious filters(3)...

There is only enough room for a pleated filter about 1-1/2" thick. When you put the K&N in, which old filter did you remove, based on the photo ?

Regardless, you need to clean the leaves out during and then after the fall, if you live where the leaves came from, or a similar "heavy" fall area, which includes York Pa. You could also devise a tacky, pre-entry screen before ea intake slot ... perhaps light 1/2" chicken fence screen.

.