Kleemann Header install. Difficulty?
Super Member
Joined: Jun 2007
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From: Atlanta
'12 E63, E55(sold), C32 (sold), '65 Skylark GS 445 convertible, '12 ML350
MBWorld Fanatic!
Joined: Mar 2008
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From: Vancouver, BC
CLS55 AMG
so what do u guys do with the secondary O2 sensors? leave them unplugged? has anyone tried extending the wires and relocating them behind the secondary cats?
i will be installing the Kleemann headers on my car and will post a DIY. I bought the EC tune, will they be able to turn off the secondary O2 sensors like Kleemann can? or do I need to send my ECU to Kleemann specially for that?
i will be installing the Kleemann headers on my car and will post a DIY. I bought the EC tune, will they be able to turn off the secondary O2 sensors like Kleemann can? or do I need to send my ECU to Kleemann specially for that?
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From: Colorado
This has recently been brought to my attention-
I'm afraid these instructions were not made by KLEEMANN USA, nor do they show how to correctly cut the factory down pipe. I'm not sure where it came from, but it is inaccurate and should not be used as a guide to install KLEEMANN Headers. Were it a real KLEEMANN manual, it would have our corporate logo on the top of every page, as well as a revision number and date at the bottom of each page indicating what version it is, and when it was written- neither of those telltales are present on that manual.
I'm afraid these instructions were not made by KLEEMANN USA, nor do they show how to correctly cut the factory down pipe. I'm not sure where it came from, but it is inaccurate and should not be used as a guide to install KLEEMANN Headers. Were it a real KLEEMANN manual, it would have our corporate logo on the top of every page, as well as a revision number and date at the bottom of each page indicating what version it is, and when it was written- neither of those telltales are present on that manual.
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From: Texas
e55 w/LET TUNE Drinks: vodka STRAIGHT Wheels: 19" HRE 547r Mods:FF headers ASP Pulley
so what do u guys do with the secondary O2 sensors? leave them unplugged? has anyone tried extending the wires and relocating them behind the secondary cats?
i will be installing the Kleemann headers on my car and will post a DIY. I bought the EC tune, will they be able to turn off the secondary O2 sensors like Kleemann can? or do I need to send my ECU to Kleemann specially for that?
i will be installing the Kleemann headers on my car and will post a DIY. I bought the EC tune, will they be able to turn off the secondary O2 sensors like Kleemann can? or do I need to send my ECU to Kleemann specially for that?
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From: Germany
E55 AMG W210 - sold, E55 AMG W211 - sold, CLS 500 C219 - sold, E63S AMG W212 - sold, C63S AMG A205
I didn't find time to install them
Did you disconnect the o2-sensors?
Senior Member
Joined: Aug 2010
Posts: 327
Likes: 5
2017 G63 Edition 463, 2008 G55k
Hi guys. Has there been any update on this install? I'm gathering all the information I need to do an install on my G55 and there's just not much information about installing these headers on a G-wagen. It seems to be a very popular item to upgrade on E55's so your threads have been very helpful.
It seems I'll be losing a set of cats when I install my Kleemann downpipes but I'll still have one set of cats left. The first set of O2 sensors (extensions needed on these) attach to the ends of the headers.
The second set attach to my down pipes after the high flow cats.
So with my setup, I'll be able to reconnect both sets of O2 sensors. However, according to Cory, I will still be getting CEL with a code "efficiency below threshold". Therefore, I will still need to send the ECU to Kleemann for reprogramming.
Has anyone done this? Or experienced any of these codes after installation?
It seems I'll be losing a set of cats when I install my Kleemann downpipes but I'll still have one set of cats left. The first set of O2 sensors (extensions needed on these) attach to the ends of the headers.
The second set attach to my down pipes after the high flow cats.
So with my setup, I'll be able to reconnect both sets of O2 sensors. However, according to Cory, I will still be getting CEL with a code "efficiency below threshold". Therefore, I will still need to send the ECU to Kleemann for reprogramming.
Has anyone done this? Or experienced any of these codes after installation?
Member
Joined: Mar 2017
Posts: 78
Likes: 0
From: Napa Valley, CA, USA
W211 AMG
Hi guys. Has there been any update on this install? I'm gathering all the information I need to do an install on my G55 and there's just not much information about installing these headers on a G-wagen. It seems to be a very popular item to upgrade on E55's so your threads have been very helpful.
It seems I'll be losing a set of cats when I install my Kleemann downpipes but I'll still have one set of cats left. The first set of O2 sensors (extensions needed on these) attach to the ends of the headers.
The second set attach to my down pipes after the high flow cats.
So with my setup, I'll be able to reconnect both sets of O2 sensors. However, according to Cory, I will still be getting CEL with a code "efficiency below threshold". Therefore, I will still need to send the ECU to Kleemann for reprogramming.
Has anyone done this? Or experienced any of these codes after installation?
It seems I'll be losing a set of cats when I install my Kleemann downpipes but I'll still have one set of cats left. The first set of O2 sensors (extensions needed on these) attach to the ends of the headers.
The second set attach to my down pipes after the high flow cats.
So with my setup, I'll be able to reconnect both sets of O2 sensors. However, according to Cory, I will still be getting CEL with a code "efficiency below threshold". Therefore, I will still need to send the ECU to Kleemann for reprogramming.
Has anyone done this? Or experienced any of these codes after installation?
Senior Member
Joined: Aug 2010
Posts: 327
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2017 G63 Edition 463, 2008 G55k
I did this install quite a few years back. I sent my ECU over to Cory since I was doing a full supercharger kit install with larger plus headers so the ECU software needed an update anyway. No CELs at all in the 4 years since the completion of the install. A few minor hiccups along the way but this setup has been pretty solid.
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From: Tampa Bay, FL
05 E55, 98 CLK320
Member
Joined: Mar 2017
Posts: 78
Likes: 0
From: Napa Valley, CA, USA
W211 AMG
I did this install quite a few years back. I sent my ECU over to Cory since I was doing a full supercharger kit install with larger plus headers so the ECU software needed an update anyway. No CELs at all in the 4 years since the completion of the install. A few minor hiccups along the way but this setup has been pretty solid.
Senior Member
Joined: Aug 2010
Posts: 327
Likes: 5
2017 G63 Edition 463, 2008 G55k
1.) The Bolts on the fuel pressure regulator started coming loose producing very slight slight leak on the pressure regulator body. Quick tightening of the allen bolts and no leaks. No loss in performance at that point. I was just smelling gasoline which wasn't good. Luckily the diaphragm of the regulator was not damaged.
2.) One of the ribs of the fanbelt shredded off after about 10k miles (Note The belt did not come off. Only 1 of the 7 ribs). Upon closer inspection, the additional pulley that we added after fitting the supercharger was about 2 mm too far in from alignment causing the fan belt to NOT be flush with the pulley surface. I added a spacer to move the pulley out a sliver and now is perfect.
3.) One of the Kleemann headers developed a hole on one of the welds. Not a nice noise at all coming from the engine when that happens. I had it welded up and sealed and all good once again.
Other than that, the engine is running good and strong in this crazy hot and humid weather we have here in the Philippines.
Last edited by BonitaBeast; Apr 26, 2017 at 12:11 AM. Reason: additional info
