K&N Drop-in Air Filters (C55)
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From: Los Angeles, CA
Mercedes C55 AMG
K&N Drop-in Air Filters (C55)
I just got K&n air filters and am ready to install them. However, I've been hearing that the oil in them causes mass air flow issues. Is it true that I'm supposed to let the filters dry out first? or should I reconsider putting these in? I've heard great things about k&n, but have also been told about the oil's side affects. What would you guys suggest? I know that a lot of members on here have K&Ns.
-Mike
-Mike
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2013 C63 AMG P31, 2014 GMC Sierra (6.2)
I've run them before without any issues. Lately, however, I've been sitting on the fence a bit. Nothings wrong with letting then dry out a bit in the sun (depends where you live I guess) prior to using them. You'll get more opinions regarding the use of K&Ns than there are stars in the sky....
Last edited by wawy; Jan 17, 2012 at 09:21 PM.
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From: ATL
05 C55 AMG
I think most of the problems people see with them is during the cleaning/oiling process. I tend to think most people that had maf issues probably over oiled them then toss them right back into the car.
I've had K&N drop ins for the last 3 years with no issues at all. When I reoil though I let the filters sit out of the car overnight to dry before installing.
X2 
I've had K&N drop ins for the last 3 years with no issues at all. When I reoil though I let the filters sit out of the car overnight to dry before installing.
Last edited by thegreatfnr; Jan 18, 2012 at 08:49 AM.
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09 335i 03 CLK55 AMG
I think most of the problems people see with them is during the cleaning/oiling process. I tend to think most people that had maf issues probably over oiled them then toss them right back into the car.
I've had K&N drop ins for the last 3 years with no issues at all. When I reoil though I let the filters sit out of the car overnight to dry before installing.
X2
I've had K&N drop ins for the last 3 years with no issues at all. When I reoil though I let the filters sit out of the car overnight to dry before installing.
X2
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+1
I have been using one in a vehicule since around 10 years and no MAF problem. Just make sure you oil the correct side of the filter after cleaning and don't apply too much oil spray
I have been using one in a vehicule since around 10 years and no MAF problem. Just make sure you oil the correct side of the filter after cleaning and don't apply too much oil spray
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2010 C63
a week or 2 after oiling them, you may experience strange issues like stalling or bad acceleration. If/ when this happens, just clean the MAF with MAF cleaner (no other cleaner!) and you'll be good as new until the next time you clean/oil the filters. I do mine like twice a year if I remember.
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From: Los Angeles, CA
Mercedes C55 AMG
I havent had them in before. I just got them shipped to me. I'm putting them in for the first time, but im gonna wipe and dry the oil off before I put them in. The last thing I want is for there to be MAF issues.
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From: Monrovia
2005 C55 AMG
when you clean and oil them use a shop vacuum to remove excess oil... make sure you let them sit in the sun for a few hours after this process... ive done it on my old clk500 and my new c55 it works fine...
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N/A
I have had K&N in my car for 3 years now and no issues.
To clean you dont always need to completely wash out and re-oil. By doing the refresh kits you can over oil or wear out the membrane doing it to frequently, and its really not necessary.
I just remove the filters and lightly bang them out over a junk towel on a table to knock out the excess dirt, lightly brush the fins to remove loose and caked on stuff, and use a very small vaccum detail tip on a shop vac in each ridge to remove excess loose dirt, bang out again, and 1 more vaccum pass. Then put them back in the car and just fine, and like new. No worries about over oiling or anything.
To clean you dont always need to completely wash out and re-oil. By doing the refresh kits you can over oil or wear out the membrane doing it to frequently, and its really not necessary.
I just remove the filters and lightly bang them out over a junk towel on a table to knock out the excess dirt, lightly brush the fins to remove loose and caked on stuff, and use a very small vaccum detail tip on a shop vac in each ridge to remove excess loose dirt, bang out again, and 1 more vaccum pass. Then put them back in the car and just fine, and like new. No worries about over oiling or anything.
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From: Chicago
2015.5 Volvo V60 Polestar
I ran K&Ns in both of my CLK55's with no issues. If you are that concerned, return the K&N
s and get AFE Dry Flows, I am running them in both my current AMGs. No oil to worry about.
s and get AFE Dry Flows, I am running them in both my current AMGs. No oil to worry about.
