02 CLK55 Exhaust question - MBWorld.org Forums

Jul 20, 2020 | 11:36 PM

Joe_Villar

Thread Starter

Junior Member

Joined: May 2017

Posts: 54

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From: West Palm Beach, FL.

2002 CLK 55 AMG Convertible

02 CLK55 Exhaust question

Haven't posted in a while, but haven't driven my CLK much either.
I'm thinking of improving my exhaust system. The thing sounds so muffled it seems to be robbing power from the engine. Not sure if the CATs are clogged.
Does anyone have any good experience in upgrading to a better exhaust system that is not as expensive as the car itself?
Thanks
Joe

Jul 21, 2020 | 04:03 AM

MartinWake

Super Member

Joined: Sep 2019

Posts: 706

Likes: 71

CL55

Just take it to a muffler shop, I will take my CL55 and remove resonators, in its place they will put an x pipe but I dont think its necessary. Maybe the cats are clogged not too sure how to tell.

Jul 29, 2020 | 02:13 PM

Thomas Grycz

Newbie

Joined: Jul 2020

Posts: 3

Likes: 1

From: NE Florida

MY04 CLK55 AMG, MY20 GLC300

Quote:

Originally Posted by Joe_Villar

if you pull the upstream O2 sensor this will allow exhaust to bypass the cat. If it’s clogged you will feel the difference.

Jul 29, 2020 | 02:18 PM

Joe_Villar

Thread Starter

Junior Member

Joined: May 2017

Posts: 54

Likes: 3

From: West Palm Beach, FL.

2002 CLK 55 AMG Convertible

Quote:

Originally Posted by Thomas Grycz

if you pull the upstream O2 sensor this will allow exhaust to bypass the cat. If it’s clogged you will feel the difference.

Thats a great idea. I'll try that.
I'm sure the check engine light will come on right?

Jul 29, 2020 | 03:24 PM

Thomas Grycz

Newbie

Joined: Jul 2020

Posts: 3

Likes: 1

From: NE Florida

MY04 CLK55 AMG, MY20 GLC300

Quote:

Originally Posted by Joe_Villar

Thats a great idea. I'll try that.
I'm sure the check engine light will come on right?

yes it likely will but a clogged cat will eventually cause a CEL

Jul 29, 2020 | 06:20 PM

Joe_Villar

Thread Starter

Junior Member

Joined: May 2017

Posts: 54

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From: West Palm Beach, FL.

2002 CLK 55 AMG Convertible

Not sure but can you identify where the location of the O2 upstream sensor plug is?

Last edited by Joe_Villar; Jul 29, 2020 at 06:21 PM. Reason: wrong plug

Jul 29, 2020 | 06:47 PM

Thomas Grycz

Newbie

Joined: Jul 2020

Posts: 3

Likes: 1

From: NE Florida

MY04 CLK55 AMG, MY20 GLC300

Quote:

Originally Posted by Joe_Villar

Not sure but can you identify where the location of the O2 upstream sensor plug is?

you want to look alright after the headers. Before the first cat you can see the O2 sensor. Here a pic of all the exhaust components Note the O2 sensor location. You can start with one side to see if your problem is only on one cat or both.

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