.
Damn CEL came on, installed K&N few days ago... go to dealer?
Junior Member
Joined: May 2011
Posts: 52
Likes: 0
From: League City, TX
2008 C63 AMG
Junior Member
Joined: May 2011
Posts: 52
Likes: 0
From: League City, TX
2008 C63 AMG
Ya know, I am not sure this is an issue with just the K&N's right? I thought I read where someone else had used a different brand and had the same issues.
I find it hard to believe it's the actual filter causing this issue. Yes it flows more air, but not THAT much more. Can any of the tuners chime in here and tell us if they have had it on a dyno where this issue has occurred and what did the AFR's say? Can they confirm that it is leaning it out? If so, can they adjust the fuel table?
I find it hard to believe it's the actual filter causing this issue. Yes it flows more air, but not THAT much more. Can any of the tuners chime in here and tell us if they have had it on a dyno where this issue has occurred and what did the AFR's say? Can they confirm that it is leaning it out? If so, can they adjust the fuel table?
MBWorld Fanatic!
Joined: Apr 2009
Posts: 6,020
Likes: 532
From: Alexandria, VA
07 E63 AMG, 10 C63 AMG, 07 E63 Designo, 07 E350, 09 C300, 07 C230
Sometime the oil that is contained within the K&N filter coats the MAF sensor, could this be the reason for the CEL?
Junior Member
Joined: May 2011
Posts: 52
Likes: 0
From: League City, TX
2008 C63 AMG
Yuill... I guess it could, which would give the MAF false readings. But I would think it would take a WHOLE bunch of oil to do this, wouldn't it? Why don't other cars that use MAF sensors have this same issue, though?
I do not have any experience with these cars, but I have had quite a few FI cars that use MAF sensors and never heard of this issue before.
For the OP, or anyone that has had this issue, did the CEl code say it was the MAF sensor or does anyone have the code it throws? I'm just wondering if this could be an o2 problem, that is being diagnosed as something else. Please understand, I am not trying to discredit anyone or dispute anyone else's findings, I am just trying to understand this so we can figure out how to fix it.
I do not have any experience with these cars, but I have had quite a few FI cars that use MAF sensors and never heard of this issue before.
For the OP, or anyone that has had this issue, did the CEl code say it was the MAF sensor or does anyone have the code it throws? I'm just wondering if this could be an o2 problem, that is being diagnosed as something else. Please understand, I am not trying to discredit anyone or dispute anyone else's findings, I am just trying to understand this so we can figure out how to fix it.
Thread Starter
Super Member
Joined: Mar 2011
Posts: 525
Likes: 0
From: Huntington Beach, CA
c63, 11 e350 (DD)
Yuill... I guess it could, which would give the MAF false readings. But I would think it would take a WHOLE bunch of oil to do this, wouldn't it? Why don't other cars that use MAF sensors have this same issue, though?
I do not have any experience with these cars, but I have had quite a few FI cars that use MAF sensors and never heard of this issue before.
For the OP, or anyone that has had this issue, did the CEl code say it was the MAF sensor or does anyone have the code it throws? I'm just wondering if this could be an o2 problem, that is being diagnosed as something else. Please understand, I am not trying to discredit anyone or dispute anyone else's findings, I am just trying to understand this so we can figure out how to fix it.
I do not have any experience with these cars, but I have had quite a few FI cars that use MAF sensors and never heard of this issue before.
For the OP, or anyone that has had this issue, did the CEl code say it was the MAF sensor or does anyone have the code it throws? I'm just wondering if this could be an o2 problem, that is being diagnosed as something else. Please understand, I am not trying to discredit anyone or dispute anyone else's findings, I am just trying to understand this so we can figure out how to fix it.
BTW, what kind of x-pipe do you have? How do you like the sound? Any vid?
I'm also thinking about getting an x to delete the seconds cats, and also deleting the resonators. Any CEL from it? lol
Junior Member
Joined: May 2011
Posts: 52
Likes: 0
From: League City, TX
2008 C63 AMG
Haven't found out what code it is, I don't have a scanner, but people that have had the same problem said "running too lean" codes were thrown out.
BTW, what kind of x-pipe do you have? How do you like the sound? Any vid?
I'm also thinking about getting an x to delete the seconds cats, and also deleting the resonators. Any CEL from it? lol
BTW, what kind of x-pipe do you have? How do you like the sound? Any vid?
I'm also thinking about getting an x to delete the seconds cats, and also deleting the resonators. Any CEL from it? lol
As for the x-pipe, I pm'd you so I don't get this thread off track. But no CEL lights as of now from the x-pipe and I've had it for a couple weeks now.
MBWorld Fanatic!
Joined: Aug 2008
Posts: 2,257
Likes: 10
From: Los Angeles
2009 C63
You can go to any Autozone and they will scan it for free. They can even clear it for you as well. I bought a scanner there and has been an invaluable tool in the past few years. I'd love to know the code it throws.
As for the x-pipe, I pm'd you so I don't get this thread off track. But no CEL lights as of now from the x-pipe and I've had it for a couple weeks now.
As for the x-pipe, I pm'd you so I don't get this thread off track. But no CEL lights as of now from the x-pipe and I've had it for a couple weeks now.
Which scanner did you pick up?
MBWorld Fanatic!
Joined: Nov 2004
Posts: 1,319
Likes: 3
From: Thick Ascending Limb
2017 BMW X5M DG/AB
MB World Stories
The Best of Mercedes & AMG
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
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
10 Most Reliable Mercedes-Benz Models You Can Buy Used
Verdad Gallardo
MBWorld Fanatic!
Joined: Apr 2007
Posts: 2,027
Likes: 7
From: Orlando, FL
2026 AMG GT63 Pro
MBWorld Fanatic!
Joined: Aug 2010
Posts: 2,493
Likes: 3
MB
You can go to any Autozone and they will scan it for free. They can even clear it for you as well. I bought a scanner there and has been an invaluable tool in the past few years. I'd love to know the code it throws.
As for the x-pipe, I pm'd you so I don't get this thread off track. But no CEL lights as of now from the x-pipe and I've had it for a couple weeks now.
As for the x-pipe, I pm'd you so I don't get this thread off track. But no CEL lights as of now from the x-pipe and I've had it for a couple weeks now.
That's what I was told from every auto parts store I've asked this about.
MBWorld Fanatic!
Joined: Mar 2011
Posts: 1,601
Likes: 10
From: San Diego/San Francisco
AMG GLC63. Audi R8
K&N has in the past discountinued filters for certain models of cars as they would cause CEL or fail. I had a K&N on my 993 that ripped at the edges about every 1,000 miles. After three warranty replacements from K&N, they sent my money back and two stock filters. They discontinued the filter shortly thereafter.
Former Vendor of MBWorld
Joined: Feb 2002
Posts: 12,403
Likes: 21
From: South Florida
Fast Cars!
what need to do is clear the code, see if it comes back with the K&N. If it does, i would clear the code and then i would put the stock back in, and see if it comes on or not. Then you know if it is a filter issue or not.
MBWorld Fanatic!
Joined: Jul 2009
Posts: 6,677
Likes: 4
From: Los Angeles
C63
