Exhaust valve on during start up?
Junior Member
Joined: Jun 2016
Posts: 35
Likes: 0
Aventador SV / 991 GT3RS / C63S / M4
Could be a US thing...I'm in Singapore..but if they can do it here I'm sure there's someone out there that can program it for settings to remain as previously set.
Junior Member
Joined: Jun 2016
Posts: 35
Likes: 0
Aventador SV / 991 GT3RS / C63S / M4
Junior Member
Joined: Jun 2016
Posts: 35
Likes: 0
Aventador SV / 991 GT3RS / C63S / M4
I know what u mean ! And I did some testing on my C63S the rear 2 muffler valves remains open when in sport + / race.
It's the center front valves that closes when u step hard on the brakes ..if u lift off just enough to hold the car that it doesn't creep forward the center valves open. But rear 2 valves are dependent on which mode is selected.
Not sure about the regular c63 if I remember correctly doesn't come with the center valves? And it's only with the performance exhaust? Correct me if I'm wrong
Member
Joined: Feb 2017
Posts: 135
Likes: 24
From: Los Angeles
2016 C63s Sedan
Palpatine
I know what u mean ! And I did some testing on my C63S the rear 2 muffler valves remains open when in sport + / race.
It's the center front valves that closes when u step hard on the brakes ..if u lift off just enough to hold the car that it doesn't creep forward the center valves open. But rear 2 valves are dependent on which mode is selected.
Not sure about the regular c63 if I remember correctly doesn't come with the center valves? And it's only with the performance exhaust? Correct me if I'm wrong
I know what u mean ! And I did some testing on my C63S the rear 2 muffler valves remains open when in sport + / race.
It's the center front valves that closes when u step hard on the brakes ..if u lift off just enough to hold the car that it doesn't creep forward the center valves open. But rear 2 valves are dependent on which mode is selected.
Not sure about the regular c63 if I remember correctly doesn't come with the center valves? And it's only with the performance exhaust? Correct me if I'm wrong
Not sure if it's only with Performance Exhaust or not, I've got the sedan with the Performance Exhaust and have nothing else to compare it with. I'm sure some of the others on the forum, without PE, will chime in though.
Senior Member
Joined: Nov 2015
Posts: 431
Likes: 70
From: UK
C63S Coupe/Range Rover Vogue SE
Would be interesting to know how/why yours stays constant. Maybe its a Singapore thing
either way pretty cool that the car keeps the settings for you.
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Joined: May 2015
Posts: 168
Likes: 25
From: ?
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Palpatine
I know what u mean ! And I did some testing on my C63S the rear 2 muffler valves remains open when in sport + / race.
It's the center front valves that closes when u step hard on the brakes ..if u lift off just enough to hold the car that it doesn't creep forward the center valves open. But rear 2 valves are dependent on which mode is selected.
Not sure about the regular c63 if I remember correctly doesn't come with the center valves? And it's only with the performance exhaust? Correct me if I'm wrong
I know what u mean ! And I did some testing on my C63S the rear 2 muffler valves remains open when in sport + / race.
It's the center front valves that closes when u step hard on the brakes ..if u lift off just enough to hold the car that it doesn't creep forward the center valves open. But rear 2 valves are dependent on which mode is selected.
Not sure about the regular c63 if I remember correctly doesn't come with the center valves? And it's only with the performance exhaust? Correct me if I'm wrong
Super Member
Joined: Oct 2015
Posts: 908
Likes: 133
From: Tampa, FL
'17 AMG S63 Convertible, '17 AMG C63S Edition 1 Coupe
I have modded the Back box on my C63s, If you open the back box you will see 2 pipes, one for quiet mode and one for loud(Race), You will see there are little slits around the smaller pipe which is the pipe used when you have the exhaust flaps open (Loud). If you cover these up you gather much much louder bangs on down shifts and all round louder volume. you can cover them up by welding them up with a metal plate.
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