Primary De-CAT
Thread Starter
Junior Member
Joined: Feb 2012
Posts: 27
Likes: 1
From: Guildford, Surrey, UK
CL55-AMG
Primary De-CAT
I really need some help guys. I was advised to do a Primary CAT delete and fit 200 cell sports secondaries to increase performance, but I cannot get rid of the EML alarm even tho we moved the Lamdas passed the secondaries. Has the extra length of wire upset the system that much? I'm massively down on power and now running very rich, so the sensors are definitely screwed. And yet it passed the UK emissions test with flying colours, I don't get it. Please help as I'm struggling to find a solution.
I'm thinking of putting everything back as it was
I'm thinking of putting everything back as it was
Thread Starter
Junior Member
Joined: Feb 2012
Posts: 27
Likes: 1
From: Guildford, Surrey, UK
CL55-AMG
Senior Member
Joined: Feb 2012
Posts: 299
Likes: 1
From: London
2004 E55K AMG Wagon
You need Star Developer which not all Indie's have and it is possible to completely screw your ECU so make sure they have done it before. Speak with the guys who did your map they shoukd be able to do it, mine was done by West Tuning or you could speak with Acid at MSL if you need there numbers I can PM them to you.
Thread Starter
Junior Member
Joined: Feb 2012
Posts: 27
Likes: 1
From: Guildford, Surrey, UK
CL55-AMG
You need Star Developer which not all Indie's have and it is possible to completely screw your ECU so make sure they have done it before. Speak with the guys who did your map they shoukd be able to do it, mine was done by West Tuning or you could speak with Acid at MSL if you need there numbers I can PM them to you.
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Thread Starter
Junior Member
Joined: Feb 2012
Posts: 27
Likes: 1
From: Guildford, Surrey, UK
CL55-AMG
Great suggestion, but you need to be more specific.
Do Kleemanns do a Primary De-CAT system?
If so how do they cope will the alarms?
or
should you NEVER remove the Primary CATS under any circumstances and leave the sensors where they are or you get the problems I'm encountering with no true solution
Do Kleemanns do a Primary De-CAT system?
If so how do they cope will the alarms?
or
should you NEVER remove the Primary CATS under any circumstances and leave the sensors where they are or you get the problems I'm encountering with no true solution
MBWorld Fanatic!
Joined: Dec 2005
Posts: 6,759
Likes: 96
From: NH
2012 C63 BS & 2014 E63 Estate & 2008 CLK63 BS
Great suggestion, but you need to be more specific.
Do Kleemanns do a Primary De-CAT system?
If so how do they cope will the alarms?
or
should you NEVER remove the Primary CATS under any circumstances and leave the sensors where they are or you get the problems I'm encountering with no true solution
Do Kleemanns do a Primary De-CAT system?
If so how do they cope will the alarms?
or
should you NEVER remove the Primary CATS under any circumstances and leave the sensors where they are or you get the problems I'm encountering with no true solution
These headers also make good power for the price
Thread Starter
Junior Member
Joined: Feb 2012
Posts: 27
Likes: 1
From: Guildford, Surrey, UK
CL55-AMG
From what you are saying the errors can definitely be removed. But I would still like to understand the function of the secondary sensors. Why Has the error code from my sensors caused the engine to run rich and consequently caused massive power reduction as seen on the dyno today ???? If its part of the management system and aids with the AFR's, how will the engine know what to do if they are mapped out or am I being thick?
MBWorld Fanatic!
Joined: Nov 2008
Posts: 1,916
Likes: 39
From: Northern VA
2006 E55
Your issues is 95% related to the cut O2 wires.
The car is running poorly because you reconnected faulty sensors.
The cel can be easily shut off by those professionals that have experience with such things.
IE tuners like Kleeman.
There are some other fixes that are hard ware, and not software...but those required O2 sensors that are functioning within OEM spec.
Get the sensor shut of electronically and call it a day.
The car is running poorly because you reconnected faulty sensors.
The cel can be easily shut off by those professionals that have experience with such things.
IE tuners like Kleeman.
There are some other fixes that are hard ware, and not software...but those required O2 sensors that are functioning within OEM spec.
Get the sensor shut of electronically and call it a day.
Thread Starter
Junior Member
Joined: Feb 2012
Posts: 27
Likes: 1
From: Guildford, Surrey, UK
CL55-AMG
Your issues is 95% related to the cut O2 wires.
The car is running poorly because you reconnected faulty sensors.
The cel can be easily shut off by those professionals that have experience with such things.
IE tuners like Kleeman.
There are some other fixes that are hard ware, and not software...but those required O2 sensors that are functioning within OEM spec.
Get the sensor shut of electronically and call it a day.
The car is running poorly because you reconnected faulty sensors.
The cel can be easily shut off by those professionals that have experience with such things.
IE tuners like Kleeman.
There are some other fixes that are hard ware, and not software...but those required O2 sensors that are functioning within OEM spec.
Get the sensor shut of electronically and call it a day.
I am currently awaiting a call back from Kleemann UK
Senior Member
Joined: Feb 2012
Posts: 299
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From: London
2004 E55K AMG Wagon
MBWorld Fanatic!
Joined: Nov 2008
Posts: 1,916
Likes: 39
From: Northern VA
2006 E55
Well I consider the sensors and the wires as one unit, hence my comment that the sensors were not within spec..as in the don't work right.
Hope you get it resolved with minimal effort
