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996 C4S Exhaust sound?

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

Discussion summary

YOUR RESEARCH996 C4S Exhaust sound?

Leading reported evidence

Run 200 cell cats

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Performed · outcome unconfirmed

I am running 200 cell cats with PSE and absolutely love it!

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996 C4S Exhaust sound?
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Leading evidence: 'Run 200 cell cats' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'better choice' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Run 200 cell cats' (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.

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better choice

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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.

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Suspected cause

It's probably a better choice to add an aftermarket exhaust system to improve the sound of your exhaust.

Original post Read captured discussion
996 C4S Exhaust sound?
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.

Run 200 cell cats

No successful repair reported for this finding.

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Unsuccessful attempts
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Discussions
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Discussions that performed work without a confirmed outcome
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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

I am running 200 cell cats with PSE and absolutely love it!

Original post Read captured discussion
996 C4S Exhaust sound?
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.

better choice

No successful repair reported for this finding.

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Identified cause
1
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Read evidence and context
Discussions that suspect a cause
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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

It's probably a better choice to add an aftermarket exhaust system to improve the sound of your exhaust.

Original post Read captured discussion
996 C4S Exhaust sound?
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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.

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

  • Rennlist: 1 discussions

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Generation: 20261026T122219Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

I was told that all 996 C4S' came with a built in exhaust sound boosting system (or whatever it's called) and that there should be a switch for this on the dashboard under neath the PSM button. Now, I don't seem to have this in my car, and was wondering if this was an optional extra after all on the C4s? I even "read" about it in a French 911 magazine "Flat 6 magazine, No 263, Jan 2013 page 73" (my French is brutal btw) and saw this button in an article about the C4S from 2002 onwards. Is this something one can have added afterwards as sound is everything (or pretty close anyway)...

POST 2Original post

The Porsche Sport Exhaust (PSE) was an option for the C4S, not a standard feature. Early 996 C4S models didn't have a switch on the dash, even if they were optioned with PSE. Later models did. PSE has valves that open and close at preset speeds to conform to European noise regulations. You can add PSE to a 996, but it is very expensive. It's probably a better choice to add an aftermarket exhaust system to improve the sound of your exhaust. There are systems with a valve and switch to control noise levels if you are interested in this feature.

POST 3 / ORIGINAL POSTEROriginal post

Thanks for your reply Dennis... Highly appreciated indeed...

POST 4Original post

I have to admit I haven't heard an aftermarket exhaust that I liked better than PSE. I am running 200 cell cats with PSE and absolutely love it!

POST 5Original post

the PSE is sweet, but Porsche started pricing the parts in the stratosphere a few years ago. Try to find a used system or salvaged.

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