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Porsche Club GB

Switchable exhaust

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7 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHSwitchable exhaust

Leading reported evidence

Replace from sport mode and found

Performed · outcome unconfirmed

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
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Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that performed work without a confirmed outcome
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Performed · outcome unconfirmed · Original poster

However part way through my journey I noticed that the exhaust had changed from sport mode and found that the dashboard switch did not make a difference, nor was there a light indicating it was working.

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Switchable exhaust
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Leading evidence: 'Replace from sport mode and found' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'just a bit of corrosion stopping the exhaust flap' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Replace from sport mode and found' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.

Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.

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1 matching discussions · 7 captured posts examined · 0 partial discussions

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just a bit of corrosion stopping the exhaust flap

Suggestion or failed attempt

No successful repair reported for this finding.

0
Identified cause
1
Suspected cause
0
Reported fixes
Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that suspect a cause
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suspected cause · Original poster

I'd like to think the problem is just a bit of corrosion stopping the exhaust flap from functioning but I will probably find it's more than that!

Original post Read captured discussion
Switchable exhaust
Frequently discussed actions (1)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

Replace from sport mode and found

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that performed work without a confirmed outcome
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Performed · outcome unconfirmed · Original poster

However part way through my journey I noticed that the exhaust had changed from sport mode and found that the dashboard switch did not make a difference, nor was there a light indicating it was working.

Original post Read captured discussion
Switchable exhaust
Reported and suspected causes (1)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

just a bit of corrosion stopping the exhaust flap

No successful repair reported for this finding.

0
Identified cause
1
Suspected cause
0
Reported fixes
Read evidence and context
Discussions that suspect a cause
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suspected cause · Original poster

I'd like to think the problem is just a bit of corrosion stopping the exhaust flap from functioning but I will probably find it's more than that!

Original post Read captured discussion
Switchable exhaust
Coverage and how to read this overview

Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.

7 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

  • Porsche Club GB: 1 discussions

0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.

0 acknowledgements have no verified action link; they do not establish a repair result.

Generation: 20261027T003124Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

My C4S has a factory switchable exhaust. I haven't used it for a few weeks but starting the car this morning it fired up immediately and defaulted to the sport mode as usual. However part way through my journey I noticed that the exhaust had changed from sport mode and found that the dashboard switch did not make a difference, nor was there a light indicating it was working. So my question is , have I got a mechanical problem or an electrical one. Given that the default mode is sport I would have thought that any component failure would leave it like that but I seem to have the opposite outcome. I'd like to think the problem is just a bit of corrosion stopping the exhaust flap from functioning but I will probably find it's more than that!

POST 2Original post

I also think it would default to loud. Is it quiet on both sides? The actuating arms can corrode and break. It might be worth checking fuse B10, and the vacuum connections in the engine bay. The valve is mounted on the top right hand side of the engine IIRC. I also guess the valve could be stuck closed.

POST 3 / ORIGINAL POSTEROriginal post

Thanks Richard It will need a bit more investigating As I move house on Friday week this weekend is earmarked for packing so will just have to put up with a quiet car for the time being.

POST 4Original post

Hi there, any pictures of where the vacuum pipes fit to the exhaust? [ ]

POST 5Original post

Depends on whether you have the original "Mk1" PSE or the later "Mk2". Mk1:

POST 7Original post

Thanks Richard, always a mine of information, your a gent. Thanks Mike

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