S6 (C7 Platform) Discussion Discussion forum for the C7 Audi S6 produced from 2012 - 2017

Operation of S6 Exhaust Flap

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Old 10-17-2016, 12:09 PM
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Originally Posted by MadAboutCars
It doesn't make an S6 or S7 any louder. The valves on these models are open most of the time anyway (only closed for 4 cylinder mode and at high rpms in comfort mode). All the switch path does is make the exhaust quieter when they are forced closed.
correct, i guess i should have stated that the awe would be great for someone looking to modify the exhaust into something louder but use the valves to quiet it down if need be like the OP stated
Old 10-21-2016, 05:52 PM
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This apperently keeps the stock valves module 'open':
1). Engine module
Byte 9
Bit 2 - exhaust flaps installed (uncheck that)
Should be able to keep the flaps open permanently thrue VCDS.

Guess it does, as on my 'tuned' S6 it was already unchecked by previous owner and i had wondered why my valves didn't work .
Old 10-24-2016, 07:43 AM
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Originally Posted by dasquade
This apperently keeps the stock valves module 'open':
1). Engine module
Byte 9
Bit 2 - exhaust flaps installed (uncheck that)
Should be able to keep the flaps open permanently thrue VCDS.

Guess it does, as on my 'tuned' S6 it was already unchecked by previous owner and i had wondered why my valves didn't work .
Thanks, might use that coding.
Old 10-27-2016, 08:07 AM
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Originally Posted by dasquade
This apperently keeps the stock valves module 'open':
1). Engine module
Byte 9
Bit 2 - exhaust flaps installed (uncheck that)
Should be able to keep the flaps open permanently thrue VCDS.

Guess it does, as on my 'tuned' S6 it was already unchecked by previous owner and i had wondered why my valves didn't work .
I checked my S6 with VCDS for the engine module and found the box already unchecked for Byte 9 and Bit 2. However my exhaust flaps still function normal. What do I do?
Old 10-27-2016, 09:02 AM
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Originally Posted by Martin89
I checked my S6 with VCDS for the engine module and found the box already unchecked for Byte 9 and Bit 2. However my exhaust flaps still function normal. What do I do?
Hmm, my OBD software didn't showed labels on the bit 2, did it give you a label if that is indeed the flaps module?
Old 10-27-2016, 10:02 AM
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Originally Posted by dasquade
Hmm, my OBD software didn't showed labels on the bit 2, did it give you a label if that is indeed the flaps module?
My VCDS showed no labels. What should I do?
Old 10-27-2016, 01:35 PM
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Originally Posted by Martin89
My VCDS showed no labels. What should I do?
It was a code i came across on audizine. Had hoped it was correct, but odd it is unchecked on yours aswell :s.
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