Exhaust Valve - MBWorld.org Forums

06-12-2019, 02:53 PM

#1

Polar.C43

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2017 Mercedes AMG C43 Coupe

Exhaust Valve

Does anyone know if the non-performance exhaust 43’s have a valved exhaust? A tuner told me they do but I’m not buying it. There’s no visible flap module.

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06-12-2019, 07:54 PM

#2

TModelle

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C190

There are no valves on the standard U21 Sport Exhaust.

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06-13-2019, 03:44 PM

#3

AMGiggity

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nothing

Curious, if there are no valves in non-PE then how it gets louder in S+?

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06-13-2019, 04:03 PM

#4

TModelle

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C190

Does it get louder in S+? Sounds more aggressive on the overrun perhaps, but I don’t think it’s louder.

Last edited by TModelle; 06-13-2019 at 04:09 PM.

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06-13-2019, 04:15 PM

#5

alexasa

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c

other cars in this segment have a flap to open when at WOT - it seems this might be the case here too?

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09-21-2019, 12:59 AM

#6

TexasBenzBandit

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2017 AMG C63, 2001 C5 Corvette

The C63 has a Valve Motor in the H-Pipe, Opens in Sports +. I bet you have that too.

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09-21-2019, 01:11 AM

#7

TModelle

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C190

Quote:

Originally Posted by TexasBenzBandit

The C63 has a Valve Motor in the H-Pipe, Opens in Sports +. I bet you have that too.

C43 only has the left and right muffler valves, no valve in center section like the C63.

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09-21-2019, 10:06 AM

#8

mo11

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2017 C43

Quote:

Originally Posted by AMGiggity

Curious, if there are no valves in non-PE then how it gets louder in S+?

I think it just seems louder in S+ because the engine idle rpm is raised.

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09-21-2019, 10:15 AM

#9

mo11

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2017 C43

Quote:

Originally Posted by TexasBenzBandit

The C63 has a Valve Motor in the H-Pipe, Opens in Sports +. I bet you have that too.

No H-pipe on non-PE... I wish it did though, hahaha!

Not even dual pipes...

Last edited by mo11; 09-21-2019 at 10:26 AM.

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09-21-2019, 11:30 AM

#10

TModelle

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C190

Quote:

Originally Posted by mo11

I think it just seems louder in S+ because the engine idle rpm is raised.

That's interesting, my car sounds the same in Comfort, Sport and Sport+. I've never found it to be louder in Sport+, same noise level as in Comfort.

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09-21-2019, 12:45 PM

#11

AhEmGee

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Quote:

Originally Posted by TModelle

That's interesting, my car sounds the same in Comfort, Sport and Sport+. I've never found it to be louder in Sport+, same noise level as in Comfort.

It definitely gets louder in Sport +. The flaps open completely and the idle speed increases.

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09-21-2019, 10:07 PM

#12

TModelle

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C190

Quote:

Originally Posted by AhEmGee

It definitely gets louder in Sport +. The flaps open completely and the idle speed increases.

Non PE has no flaps. There was a question from post #3 “Curious, if there are no valves in non-PE then how it gets louder in S+?”

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09-22-2019, 03:35 AM

#13

AhEmGee

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2004 E55 K Wagon &. '96 SL500

Quote:

Originally Posted by TModelle

Non PE has no flaps. There was a question from post #3 “Curious, if there are no valves in non-PE then how it gets louder in S+?”

Sorry thought you were talking about Amg PE equipped cars.
I'd hate to have an AMG without one !

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09-22-2019, 08:15 AM

#14

TModelle

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C190

Quote:

Originally Posted by AhEmGee

Sorry thought you were talking about Amg PE equipped cars.
I'd hate to have an AMG without one !

I really don’t know if I still think that way after driving it for a few months now, the non PE exhaust is sometimes unbearably loud especially on upshifts, I am now trying to find ways to make it quieter.

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09-22-2019, 08:18 AM

#15

AhEmGee

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2004 E55 K Wagon &. '96 SL500

Quote:

Originally Posted by TModelle

I really don’t know if I still think that way after driving it for a few months now, the non PE exhaust is sometimes unbearably loud especially on upshifts, I am now trying to find ways to make it quieter.

Yeah that's I mean, I wouldn't want to own a NON Performance equipped car ie one with a standard exhaust.

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09-22-2019, 10:48 AM

#16

jim04clk

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Absolutely the performance exhaust really makes the car. It sounds great. When I was searching for my car with the dealer. I made sure it had it and the rest of the other stuff I felt was important.