Exhaust Valve solution.
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Joined: Dec 2021
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2016 AMG GTS Edition 1
If you remove the valves, the car is always loud. There are no physical valves to open/close. The valve in the center H pipe is still there, however I have the aftermarket CPC module which codes all valves open at all times so my center H valve is always open. I removed the two exhaust muffler valves because they got stuck, the center H valve is retained and didn't have the same issue. My car is just as loud in C, S+ and Race and that's the way I like it haha
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From: IL
19 E63s, 23 M3 compX, B9 SQ5
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From: Vancouver
2018 e63s edition 1
If you remove the valves, the car is always loud. There are no physical valves to open/close. The valve in the center H pipe is still there, however I have the aftermarket CPC module which codes all valves open at all times so my center H valve is always open. I removed the two exhaust muffler valves because they got stuck, the center H valve is retained and didn't have the same issue. My car is just as loud in C, S+ and Race and that's the way I like it haha
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MBWorld Fanatic!
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From: IL
19 E63s, 23 M3 compX, B9 SQ5
Typically H pipes change the tone of the pulses, they don't add volume. The main volume comes from the muffler valves fully open. You can swap out the H pipe for an X pipe, or close H valve for "straight pipes" and hear the tone change, but it won't be any louder. IMO.
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Joined: May 2011
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From: Vancouver
2018 e63s edition 1
I'm not sure about this, maybe someone with more solid info can chime in.
Typically H pipes change the tone of the pulses, they don't add volume. The main volume comes from the muffler valves fully open. You can swap out the H pipe for an X pipe, or close H valve for "straight pipes" and hear the tone change, but it won't be any louder. IMO.
Typically H pipes change the tone of the pulses, they don't add volume. The main volume comes from the muffler valves fully open. You can swap out the H pipe for an X pipe, or close H valve for "straight pipes" and hear the tone change, but it won't be any louder. IMO.
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Joined: Dec 2021
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2016 AMG GTS Edition 1
Update on exhaust
Wanted to follow up on my exhaust issue I’ve had. After thinking about different options, I tried to go to several exhaust shops to get them to cut open the exhaust and weld on new flaps. 95% of the shops did not want to come near it, and the 1 shop that did wanted about $1500 for labor. Apparently it’s a very labor intensive process given the metal that MB uses. (Talking 5 hours per side).
What I ended up doing was getting a new exhaust for Helms Bros Mercedes’ in NY for a not too bad $2800 price tag and a local install for $300. Much better than the $5500 Mercedes’ dealer wanted!
What I ended up doing was getting a new exhaust for Helms Bros Mercedes’ in NY for a not too bad $2800 price tag and a local install for $300. Much better than the $5500 Mercedes’ dealer wanted!
Junior Member
Joined: Mar 2021
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2018 E63S
Wanted to follow up on my exhaust issue I’ve had. After thinking about different options, I tried to go to several exhaust shops to get them to cut open the exhaust and weld on new flaps. 95% of the shops did not want to come near it, and the 1 shop that did wanted about $1500 for labor. Apparently it’s a very labor intensive process given the metal that MB uses. (Talking 5 hours per side).
What I ended up doing was getting a new exhaust for Helms Bros Mercedes’ in NY for a not too bad $2800 price tag and a local install for $300. Much better than the $5500 Mercedes’ dealer wanted!
What I ended up doing was getting a new exhaust for Helms Bros Mercedes’ in NY for a not too bad $2800 price tag and a local install for $300. Much better than the $5500 Mercedes’ dealer wanted!
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Joined: Dec 2021
Posts: 143
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2016 AMG GTS Edition 1
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Junior Member
Joined: Mar 2021
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2018 E63S
Their bypass essentially allows functionality of the exhaust flap actuators, while flaps can be set in any stationery position - for me fully open; so that reduced power mode caused by the stuck flaps goes away. Another cool thing is it can be easily reverted back to ‘stock’ for when needed to take back to the dealership for warranty work.
The kit is pretty neat.
The kit is pretty neat.
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2016 AMG GTS Edition 1
Junior Member
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2018 E63S
Junior Member
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C63
Mine was in the shop a few weeks ago for this. Took some fighting for them to actually look at the valves. They kept saying the car wouldn’t act like that with just a failed valve. Sure enough it was. Have stage 2 and down pipes, fought a bit but got them to do it under warranty.
Junior Member
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2018 E63S
I had the same argument with Mercedes and they didn’t replace them because the entire exhaust would need to be replaced. A friend of mine was lucky enough to get his right side muffler replaced but that involved them cutting the exhaust and using a clamp to secure the new one.
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C63
I had the same argument with Mercedes and they didn’t replace them because the entire exhaust would need to be replaced. A friend of mine was lucky enough to get his right side muffler replaced but that involved them cutting the exhaust and using a clamp to secure the new one.
Member
Joined: Dec 2021
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2016 AMG GTS Edition 1
you could actually remove the black boxes (held in by little bolts) and manually open and close the flaps. I imagine you can grease these flaps with some high temp grease to stop them from sticking. Wish I had tried that before buying a new exhaust
Junior Member
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C63
Someone did say that, WD40 do a high temperature one, i might give that a go if all else fails.
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Joined: May 2011
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From: Vancouver
2018 e63s edition 1
Mercedes actually does have a document/bulletin saying not to replace any parts. They said to use high temp special lubricant that they have specifically for this issue. Says replacing components does not remedy the problem in the document. I was lucky enough to know the tech working on my car and with a bit of convincing with his foreman and a good word put into a service advisor manager, they were able to get Mercedes to okay a new muffler on one side of the car. Like mentioned above the piping just opposite side of the muffler from then tips was cut and the new piece was fitted with using a stainless l sleeve/clamp. I was more hoping they'd replace the whole exhaust knowing that im going to do downpipes and want them to work as long as possible, but the squeeking/loud valve got fixed at least. Corporate has got to know this is an issue given how common it is and just don't want to be on the hook for the bill.
Thread Starter
MBWorld Fanatic!
Joined: Jun 2014
Posts: 1,589
Likes: 683
From: IL
19 E63s, 23 M3 compX, B9 SQ5
Mercedes actually does have a document/bulletin saying not to replace any parts. They said to use high temp special lubricant that they have specifically for this issue. Says replacing components does not remedy the problem in the document. I was lucky enough to know the tech working on my car and with a bit of convincing with his foreman and a good word put into a service advisor manager, they were able to get Mercedes to okay a new muffler on one side of the car. Like mentioned above the piping just opposite side of the muffler from then tips was cut and the new piece was fitted with using a stainless l sleeve/clamp. I was more hoping they'd replace the whole exhaust knowing that im going to do downpipes and want them to work as long as possible, but the squeeking/loud valve got fixed at least. Corporate has got to know this is an issue given how common it is and just don't want to be on the hook for the bill.
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From: Vancouver
2018 e63s edition 1
