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Exhaust is going quieter and it is definitely not in my head

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Old Feb 9, 2017 | 01:06 PM
  #26  
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Originally Posted by powerrrrr
​​​​​​The noises made by excess fuel in the exhaust system was from overflow in carburated engines when you lift off the gas. The sounds nowadays are made by spraying a tiny amount of fuel into the exhaust system to simulate the noise of the old carburated engines.

As far as I can tell there's no computer tweak to make it do more of that, but I guess you can get rid of the muffler to make your car louder.
So is that done with a separate fuel injector connected to the exhaust manifold? If so, I am not sure why it wouldn't be possible to drop a few more droplets of gas on the hot exhaust.
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Old Feb 9, 2017 | 01:25 PM
  #27  
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Originally Posted by munis
So is that done with a separate fuel injector connected to the exhaust manifold? If so, I am not sure why it wouldn't be possible to drop a few more droplets of gas on the hot exhaust.
The tuning companies are probably a little more focused more on performance than audio only tweaks, the stock settings probably erred on the conservative side with that, even the old carburated engines only had a few pops when you lift off.

If you want a lot of pops, you should put in an anti lag system. Switch it on, and as soon as you go off boost, the system kicks in to maintain boost pressure with continuous backfires.
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Old Feb 9, 2017 | 05:27 PM
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Originally Posted by kck77
Mentioned this above Sanch! Check out Rokenr on Instagram for a comparison video this week between his Solarbeam C63S Coupe and his Edition 1 C63S that just had the update!
That's who I found out through too!

It's funny that hes the only one that knows about the update?
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Old Feb 9, 2017 | 05:47 PM
  #29  
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Originally Posted by Sanch
That's who I found out through too!

It's funny that hes the only one that knows about the update?
Mercedes in the UK doesn't seem to know! I hope it's true--I really want it to be
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Old Feb 9, 2017 | 06:36 PM
  #30  
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Originally Posted by powerrrrr
​​​​​​The noises made by excess fuel in the exhaust system was from overflow in carburated engines when you lift off the gas. The sounds nowadays are made by spraying a tiny amount of fuel into the exhaust system to simulate the noise of the old carburated engines.

As far as I can tell there's no computer tweak to make it do more of that, but I guess you can get rid of the muffler to make your car louder.
this is not entirely accurate. The pops in the exhaust can be caused by changing timing in the motor.
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Old Feb 10, 2017 | 11:05 AM
  #31  
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Originally Posted by powerrrrr
The tuning companies are probably a little more focused more on performance than audio only tweaks, the stock settings probably erred on the conservative side with that, even the old carburated engines only had a few pops when you lift off.

If you want a lot of pops, you should put in an anti lag system. Switch it on, and as soon as you go off boost, the system kicks in to maintain boost pressure with continuous backfires.




Are there any Anti lag systems available for these cars? I ALWAYS WANTED ONE!
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Old Feb 10, 2017 | 05:56 PM
  #32  
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I hope if the exhaust does indeed get quieter that there is a solution. The exhaust is awesome and a major part of the enjoyment of the car for me.
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Old Feb 11, 2017 | 11:15 PM
  #33  
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I haven't hit a 1000 miles and I feel the same way. I have had the car for over a month now, but I am sure its just me getting use to the car.
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Old Feb 12, 2017 | 01:19 AM
  #34  
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after the 30k KM service, I felt the change in the exhaust tone, but unfortunately was very lazy to do anything about it.
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Old Feb 12, 2017 | 01:54 PM
  #35  
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Thing is if you bring this up with the dealership, I know exactly how they are going to react. They will be like it is all in your head, then I would say no it isn't, they would say yes it is and it will continue.

If anyone here can give me a very viable argument for getting this diagnosed from the dealership, I will be more than willing to do the leg work.
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Old Feb 12, 2017 | 02:03 PM
  #36  
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Originally Posted by munis
Thing is if you bring this up with the dealership, I know exactly how they are going to react. They will be like it is all in your head, then I would say no it isn't, they would say yes it is and it will continue.

If anyone here can give me a very viable argument for getting this diagnosed from the dealership, I will be more than willing to do the leg work.
Thought you had comparison videos. Also take yours in when they have a new one in stock. Test drive that one and then yours with the service guy in the car.
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Old Feb 13, 2017 | 12:01 PM
  #37  
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Originally Posted by Dthquazi
Thought you had comparison videos. Also take yours in when they have a new one in stock. Test drive that one and then yours with the service guy in the car.
I do have comparison videos, but I can't tell for all the service centers, but ones I have been dealing with point blank refused to look at some pictures I had of my tail lights with condensation in them. As far as I have seen they don't take in video or photo evidence. They apparently have to diagnose it themselves.
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Old Feb 13, 2017 | 01:55 PM
  #38  
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Originally Posted by munis
I do have comparison videos, but I can't tell for all the service centers, but ones I have been dealing with point blank refused to look at some pictures I had of my tail lights with condensation in them. As far as I have seen they don't take in video or photo evidence. They apparently have to diagnose it themselves.
It all depends on the forman as it's the case for me. One foreman drove the car with me either had hearing problem or intended not to hear obvious rattles from the seatbelt adjuster. He said he wanted to hear it while driving, not from a video.

As to exhaust note, I think it may be hard to tell a difference from videos. Temperature, road condition etc. may vary.

Also, my personal note, when the temperature is very cold, and engine/exhaust/transmission temp are low - there's almost no pops and cracks from the exhaust (in sport +). Same day I tested it when all those temps went up, I could hear the exhaust not clearly (didn't notice a "quieter sound" - 2000 miles since delivery)
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Old Feb 13, 2017 | 02:01 PM
  #39  
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Originally Posted by munis
Thing is if you bring this up with the dealership, I know exactly how they are going to react. They will be like it is all in your head, then I would say no it isn't, they would say yes it is and it will continue.
Exactly
dont know how to be with it
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Old Feb 13, 2017 | 02:03 PM
  #40  
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I have not had my exhaust note get quieter but my c63s compaired to my friends we got them a few days after each other and his has 3000 miles and mine has 2500. When revving in park i get very loud cracks and bangs almost every single time i rev and he can rev for 10 minutes straight and not even get one in race mode.
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Old Feb 13, 2017 | 08:19 PM
  #41  
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Originally Posted by Modio1234
I have not had my exhaust note get quieter but my c63s compaired to my friends we got them a few days after each other and his has 3000 miles and mine has 2500. When revving in park i get very loud cracks and bangs almost every single time i rev and he can rev for 10 minutes straight and not even get one in race mode.
Do you both have the "s" version and the optional performance exhaust?
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Old Feb 13, 2017 | 09:00 PM
  #42  
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i have 9k kms on mine and on idle its quiet. on cold start is a rumble but when its warm on idling its half the sound or less. no pops or crackles on revs. i sometimes get a little pop/crackle on shifting.

when i start moving from a light you can hear the rumble a bit more. i will be cutting out the secondary cats tho soon. i need more sound in my life. easy and cheap mod.
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Old Feb 13, 2017 | 09:38 PM
  #43  
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Originally Posted by 303_AMG
Do you both have the "s" version and the optional performance exhaust?
Yes we both have the s model and we both DONT have the performance exhaust both are bone stock. Our cars are exactly the same including the engine builder except exterior color and performance seats.
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Old Feb 14, 2017 | 02:34 AM
  #44  
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Anyone heard any more about this dealer exhaust software update?
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Old Feb 14, 2017 | 04:58 AM
  #45  
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This thread's making me worried - guessing it's a sensible idea to get some videos demonstrating exhaust noise at delivery so there's a reference point in case they claim it's all in your head later on.

Is there a sensible place to sample the noise to get a decent reference - put a GoPro next to exhaust at idle, at x RPM or similar?
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Old Feb 14, 2017 | 07:21 AM
  #46  
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-

Last edited by juse; Jun 14, 2017 at 02:43 AM.
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Old Feb 19, 2017 | 12:31 PM
  #47  
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Small update guys, the exhaust being quieter might have been due to really cold temperatures. This weekend the temperature is a very nice 15C, and the car is properly loud again.

No idea behind the physics of this, but thought I will let you guys know.
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Old Feb 21, 2017 | 10:51 AM
  #48  
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Originally Posted by munis
Small update guys, the exhaust being quieter might have been due to really cold temperatures. This weekend the temperature is a very nice 15C, and the car is properly loud again.

No idea behind the physics of this, but thought I will let you guys know.
The weekend weather here in the GTA was beautiful - I tested the cold / warm weather theory too and was pleasantly surprised as well! Mystery solved
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Old Feb 21, 2017 | 11:04 AM
  #49  
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Interesting...

Last Thursday I had a C43 w/PE loaner for a few hours. It had just over 6,000 kms on the odo. When I got my C43 w/PE back (it only has ~500kms on the odo), I found my C43 definitely sounded louder.

Same day... same ambient temps.

Last edited by 1Gunner; Feb 21, 2017 at 04:37 PM.
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Old Feb 21, 2017 | 06:45 PM
  #50  
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Originally Posted by Sanch
That's who I found out through too!

It's funny that hes the only one that knows about the update?
Check his Instagram... although not the comparison video he promised, he posted his "exhaust updated" ED 1 doing some revs ( albeit with a birthday cake and candles in tow ) ... none the less, the thing sounds pretty bloody mean and louder, maybe its just the cameras position, who knows ....
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