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High flow exhaust

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

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

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YOUR RESEARCHHigh flow exhaust

Leading reported evidence

Replace entire exhaust

Suggestion or failed attempt

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 contain suggestions: 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.

Suggestion · Original poster
If I want to get some hp gain, should I replace the entire exhaust with a high flow exhaust or maybe I could just swap the cats (for 200 cell versions) to get almost the same effect?
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High flow exhaust

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Leading evidence: 'Replace entire exhaust' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace entire exhaust' (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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1 matching discussions · 6 captured posts examined · 0 partial discussions

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Replace entire system

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that contain suggestions: 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.

Suggestion · Original poster
So the question is, is it worth the money to replace the entire system?
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High flow exhaust

Frequently discussed actions (2)

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

Replace entire exhaust

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that contain suggestions: 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.

Suggestion · Original poster
If I want to get some hp gain, should I replace the entire exhaust with a high flow exhaust or maybe I could just swap the cats (for 200 cell versions) to get almost the same effect?
Original post Read captured discussion
High flow exhaust

Replace entire system

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that contain suggestions: 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.

Suggestion · Original poster
So the question is, is it worth the money to replace the entire system?
Original post Read captured discussion
High flow 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.

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

Rennlist: 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: 20261026T200546Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

I have a 996 C2 2002 with a "sport exhaust" of unknown origin and I am thinking about buying a "high flow" exhaust. If I want to get some hp gain, should I replace the entire exhaust with a high flow exhaust or maybe I could just swap the cats (for 200 cell versions) to get almost the same effect? So the question is, is it worth the money to replace the entire system? So, what is the difference between a sport exhaust and a high flow exhaust? If I should get a high flow exhaust, how loud are they normally? Is it ok for a long weekend trip with the family? We also have some restrictions on noice on track days... Somebody got any experience? Robert

POST 2Original post

you have to go all the way... free flow intake, headers, 200 cel cats and mufflers..... AND a flash. Thats the only way you'll notice a diff.... and only above 4-5000 RPM @ wot. If you have a "real" Porsche sports exhaust, you can always push the quiet button, so the family will be fine.

POST 3Original post

Hi Robert, Are you able to take some pictures under the car, so we can identify what you already have? Are you not happy with the current sound/performance?

POST 4 / ORIGINAL POSTEROriginal post

Hi Chris I found some old pictures, I don't know if they are good enough... Robert

POST 5Original post

Hi Robert, Looks like you have all stock components. Since you already have the PSE mufflers, I would first start with our modular X-Pipe with HJS 200 cell catalyts. I would also consider our Cold Air kit - both will offer higher flow and the increase in sound you are looking for, while still keeping the car docile while you are just cruising around. https://www.fabspeed.com/996_GT3.html We recently introduced black hoses to the cold air kit, if you do not want the red.

POST 6Original post

Quotes source post: 10180646

I have both of these Fabspeed components on my C4S and I'm very happy with them.

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