E-Class (W212) 2010 - 2016: E 350, E 550
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Old Nov 30, 2022 | 11:49 PM
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Mercedes E550
E550 Downpipes

Does anyone have a video of doing downpipes for the W212 E550? Also what is the difficulty level of doing them?
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Old Dec 1, 2022 | 01:17 PM
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From: Calverton MD 20705
2013 W212 E350 RWD
Generally the installation of a down pipe is not that difficult. If you can see the downpipe and touch it, You can change it out. Because this it's a Mercedes and they don't like you touching things, if your car is AWD, you may have to drop the subframe/steering rack/ get low profile engine mounts. That's what I found when I searched the forums for you
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Old Dec 1, 2022 | 04:19 PM
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Mercedes E550
Appreciate the info, that’s my main question is how much I’ll have to take apart to be able to take them out and hook the new ones up. Also mine is a coupe which is RWD, do you know if that affects it differently in anyway?
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Old Dec 1, 2022 | 06:16 PM
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From: 122W, 37N
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on the stock V8 exhaust, the exhaust headers on each side connect to a main exhaust line (650, 660 on the drawing below) which include the catalytic converter and post converter, and those two main lines connect to the mid and rear mufflers.




So I'm not sure what you mean by 'downpipe' ?
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Old Dec 1, 2022 | 06:37 PM
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W212 E350
Originally Posted by Left Coast Geek
on the stock V8 exhaust, the exhaust headers on each side connect to a main exhaust line (650, 660 on the drawing below) which include the catalytic converter and post converter, and those two main lines connect to the mid and rear mufflers.




So I'm not sure what you mean by 'downpipe' ?
A downpipe is typically known as the piping that comes off of the turbo. The M278 platform, however, has bridge pipes and downpipes. Installation of downpipes on a 4-matic model requires either removal of the subframe or lifting the engine slightly (I don't remember which). RWD W207 Coupes, and RWD PFL W218 downpipes are able to be installed without any movement of the drivetrain. Most downpipes for sale you will see online include both the downpipe and the bridge pipe
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Old Dec 1, 2022 | 06:40 PM
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From: 122W, 37N
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oh, you have the 550 turbo platform, not the 5.5 v8 non-turbo, ok.
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Old Dec 1, 2022 | 07:03 PM
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so the turbo side of things with an M278 looks like...



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Old Dec 1, 2022 | 09:03 PM
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From: 122W, 37N
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and to be clear, on those top two diagrams, pipe 150 and 210 are both air pipes. guessing the exhaust pipes, 650,660, with the cats attach directly to the turbo exhaust outputs.
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Old Dec 1, 2022 | 11:21 PM
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Mercedes E550
Originally Posted by DeTh
A downpipe is typically known as the piping that comes off of the turbo. The M278 platform, however, has bridge pipes and downpipes. Installation of downpipes on a 4-matic model requires either removal of the subframe or lifting the engine slightly (I don't remember which). RWD W207 Coupes, and RWD PFL W218 downpipes are able to be installed without any movement of the drivetrain. Most downpipes for sale you will see online include both the downpipe and the bridge pipe
Thanks for the info!
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Old Dec 4, 2022 | 10:27 AM
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Just to clarify on this, he said he has a coupe. So all work is 100% easier than on a 4MATIC. Ask on their sub-forums.
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Old Dec 5, 2022 | 08:20 PM
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10-second E550
Originally Posted by DeTh
A downpipe is typically known as the piping that comes off of the turbo. The M278 platform, however, has bridge pipes and downpipes. Installation of downpipes on a 4-matic model requires either removal of the subframe or lifting the engine slightly (I don't remember which). RWD W207 Coupes, and RWD PFL W218 downpipes are able to be installed without any movement of the drivetrain. Most downpipes for sale you will see online include both the downpipe and the bridge pipe
Are you saying that bridge pipes can be installed on a 207 without disconnecting anything major? I've seen references to that, but trying to verify.

Thanks
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Old Dec 6, 2022 | 10:04 AM
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W212 E350
Originally Posted by Siegmann
Are you saying that bridge pipes can be installed on a 207 without disconnecting anything major? I've seen references to that, but trying to verify.

Thanks
Unfortunately I cannot confirm that for you. I have heard that bridge pipes are minimal gains on the 207/212/218 platform, and I do believe you need to lift the motor for the install of bridge pipes. Since bridge pipes are separate from downpipes, you an go catless with the stock bridge pipes still installed.
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