change air filters with K&N
Thread Starter
Newbie
Joined: Feb 2014
Posts: 11
Likes: 0
From: Ft Lauderdale, FL
2008 CLS AMG6.3
change air filters with K&N
Members....any instructions or tips on how to change the two air intake filters on my 08 CLS AMG? I was able to get the 6-7 screws out of the cover, but it still will not budge. Am I missing something else?
Any help would be great.
Do you recommend K&N or another brand.
Frank
Any help would be great.
Do you recommend K&N or another brand.
Frank
Thread Starter
Newbie
Joined: Feb 2014
Posts: 11
Likes: 0
From: Ft Lauderdale, FL
2008 CLS AMG6.3
change air filters
Well I found an instructional video on the net. I was trying to take the metal cover off the top of the engine. The video shows the air filters are under a rubber cover on the far upper left. I was able to locate them and will order K&N brand.
Frank
Frank
MBWorld Fanatic!
Joined: Aug 2011
Posts: 3,184
Likes: 16
From: Highlands Ranch, Colorado
2014 BMW M235i
If you have the CLS63 AMG do NOT go with K&N Filters!!! They are oil-based (old technology first off) and have commonly caused MAF sensors to fail (not an issue on the supercharged CLS55 which have MAP sensors) because the oil from the filters will slowly build up and foul out the MAF - not an inexpensive part to have to replace. Usually you'll be fine for a year or so but end up having to replace your fouled out sensor.
MBWorld Fanatic!
Joined: Aug 2011
Posts: 3,184
Likes: 16
From: Highlands Ranch, Colorado
2014 BMW M235i
That's true too, they actually don't filter down to the same tolerances either and over time can't be good for your engine. But on the bright side it's only a $27,000 crate engine used 
MBWorld Fanatic!
Joined: Apr 2007
Posts: 1,154
Likes: 1
From: Italy
cls 55 or FIAT Coupe T20v-6speed
Trending Topics
MB World Stories
The Best of Mercedes & AMG
8 Oddball Mercedes Ideas That Actually Made it to Production
Verdad Gallardo
Dubai Tuner Gives the Mercedes G-Class An Entirely New Look
Verdad Gallardo
Six Gift Ideas Your AMG Loving Dad or Grad Will Cherish
7 Craziest Things AMG Gas Ever Built
Verdad Gallardo
New Electric Mercedes-AMG GT 4-Door Coupe Unveiled: 10 Things You Need to Know
Verdad Gallardo
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)
Verdad Gallardo
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
MBWorld Fanatic!
Joined: Aug 2011
Posts: 3,184
Likes: 16
From: Highlands Ranch, Colorado
2014 BMW M235i
My point is the dry filter technology is good enough to where oil filters aren't *really* necessary, the modern materials out there are good enough that it doesn't make sense to put a K&N on a naturally aspirated M156 where, if by user error or the natural course of filter usage, it fouls the MAF sensor. I'm aware this is controversial and K&N outright denies it on their website but with an argument I just don't trust. I know you drive a CLS55 and it doesn't have a MAF sensor, but it's also known - and many on this forum share the same opinion - that the K&Ns don't filter out down to the same tolerances the OEM ones do.
Last edited by AMGAffalterbach; Mar 14, 2014 at 12:47 AM.
MBWorld Fanatic!
Joined: Apr 2007
Posts: 1,154
Likes: 1
From: Italy
cls 55 or FIAT Coupe T20v-6speed
developments in air filter materials &technology
besides the possible MAF issue it would be interesting to know more about recent developments in air filter materials &technology ..
I 'm really not up to date in this.
I remained where:
a- stock "paper" filters are very obstructive for filtering down to certain tolerances (which ones ..?!)
b- "sport filters" such as those PU/foam-based or cotton-based (as K&N, BMC, chinese clones ..) could avoid such over obstruction combining a thinner core material (cotton or foam that is) AND by applying a thin layer of low-viscosity oil.
btw, if that meets certain tolerances or not, should not be left to just opinions ..
sure, both technologies are very old ...at least 30years
and nowadays, AFAIK, the core materials of both a) and b) technologies are still the same .. but I could be wrong as I didn't pay attention to this lately.
that's why I was interested in this, also because it seems really weird that just this domain has not been affected by the innovations and new findings concerning polymers and nanoparticles...
now, again, I really don't know what kind of paper material the car industry
actually employs for the original or aftermarket air intake filters,
but, on the other hand, it seems to me that the sister industry of Heavy-duty vehicles is much far ahead in these applications:
http://www.donaldson.com/en/engine/s...ary/059806.pdf
I 'm really not up to date in this.
I remained where:
a- stock "paper" filters are very obstructive for filtering down to certain tolerances (which ones ..?!)
b- "sport filters" such as those PU/foam-based or cotton-based (as K&N, BMC, chinese clones ..) could avoid such over obstruction combining a thinner core material (cotton or foam that is) AND by applying a thin layer of low-viscosity oil.
btw, if that meets certain tolerances or not, should not be left to just opinions ..
sure, both technologies are very old ...at least 30years
and nowadays, AFAIK, the core materials of both a) and b) technologies are still the same .. but I could be wrong as I didn't pay attention to this lately.
that's why I was interested in this, also because it seems really weird that just this domain has not been affected by the innovations and new findings concerning polymers and nanoparticles...
now, again, I really don't know what kind of paper material the car industry
actually employs for the original or aftermarket air intake filters,
but, on the other hand, it seems to me that the sister industry of Heavy-duty vehicles is much far ahead in these applications:
http://www.donaldson.com/en/engine/s...ary/059806.pdf
