Porsche Club GB

C4S Exhaust System

Add to repair workspace

3 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHC4S Exhaust System

1 matching discussions were examined; no attributable action/outcome evidence was detected. No consensus or repair conclusion is claimed.

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

Read captured replies

Insufficient extracted evidence does not mean there is no answer in the original discussions.

1 matching discussions · 3 captured posts examined · 0 partial discussions

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.

3 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: 20261026T122219Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

I have recently upgraded from a 1998 3.4 to a 2003 C4S. I am really pleased with the car, in my opinion the overall quality of the facelift cars is much better than the earlier ones. The additional torque is very noticeable which makes it an even better drive. To my disappointment the car does not have a sports exhaust (about the only extra it is not fitted with) but on start up from cold the exhust note is quite raspy, almost like a sports exhaust. However, as soon as the system gets warm the note subsides to a lower level. Has anyone else experienced this or could it indicate a fault? Appreciate any feedback. Terry

POST 2Original post

I never really noticed this with mine pre PSE. However, if there is a fault with yours and you need any parts I have my previous standard exhaust system with only 10k miles use - for which you are welcome to make an offer?

POST 3Original post

What you describe is normal, probably as a result of the cold start function, which raises the initial idle speed. But, IMO, there really is no alternative to the PSE - the 'must have' option on the 996. Time to get your cheque book out[&:]

This is a source reference. Confirm exact model applicability in the original material.