Exhaust valve on during start up?
03-17-2017, 02:28 PM
#26
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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.
03-17-2017, 02:30 PM
#27
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Aventador SV / 991 GT3RS / C63S / M4
03-17-2017, 02:37 PM
#28
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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
03-17-2017, 04:16 PM
#29
Member
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.
03-17-2017, 04:17 PM
#30
Senior Member
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.
03-19-2017, 05:49 PM
#32
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
03-31-2017, 06:58 PM
#33
Super Member
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.
04-03-2017, 09:40 AM
#34
