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Factory Cat. 02 C4S

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

Discussion summary

YOUR RESEARCHFactory Cat. 02 C4S

Reported repair

Install used porsche oem cat, and no more codes

Reported resolution
1
Reported fixes
0
Unsuccessful attempts
1
Discussions
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 report a fix
1

1 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.

Reported fix · Original poster

Finally installed the used Porsche OEM cat, and no more codes for the Cat bank 2; I took off a new DEC cat that constantly threw codes every 40 km.

Original post Read captured discussion
Factory Cat. 02 C4S
Read full discussion summary

Leading evidence: 'Install used porsche oem cat, and no more codes' (1 discussions report resolution; 0 report an unsuccessful attempt). Across 1 matching discussions, The most frequently discussed action is 'Install used porsche oem cat, and no more codes' (1 discussions). For that action, 1 discussions report a resolution and 0 report an unsuccessful attempt. The most frequently reported fix is 'Install used porsche oem cat, and no more codes', supported by resolution reports in 1 discussions. 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.

Read captured replies

1 matching discussions · 9 captured posts examined · 0 partial discussions

Compare 2 other evidence results

Replace cats at once, unless you are

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
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 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

I now feel it's better to change both cats at once, unless you are replacing one OEM cat with the same equipment, like I did.

Original post Read captured discussion
Factory Cat. 02 C4S

Run into any more issues, please know

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
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 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

If you run into any more issues, please know that we offer a sport cat x-pipe for your vehicle with the highest quality HJS 200 cell cats.

Original post Read captured discussion
Factory Cat. 02 C4S
Frequently discussed actions (3)

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

Install used porsche oem cat, and no more codes

1
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that report a fix
1

1 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.

Reported fix · Original poster

Finally installed the used Porsche OEM cat, and no more codes for the Cat bank 2; I took off a new DEC cat that constantly threw codes every 40 km.

Original post Read captured discussion
Factory Cat. 02 C4S

Replace cats at once, unless you are

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

I now feel it's better to change both cats at once, unless you are replacing one OEM cat with the same equipment, like I did.

Original post Read captured discussion
Factory Cat. 02 C4S

Run into any more issues, please know

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

If you run into any more issues, please know that we offer a sport cat x-pipe for your vehicle with the highest quality HJS 200 cell cats.

Original post Read captured discussion
Factory Cat. 02 C4S
Actions with reported resolution accounts (1)

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

Install used porsche oem cat, and no more codes

1
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that report a fix
1

1 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.

Reported fix · Original poster

Finally installed the used Porsche OEM cat, and no more codes for the Cat bank 2; I took off a new DEC cat that constantly threw codes every 40 km.

Original post Read captured discussion
Factory Cat. 02 C4S
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.

9 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: 20261026T155324Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Hi. I'm looking to buy a used factory Cat for my 02/ C4S/ right side/bank 2 reasonably priced.

POST 4 / ORIGINAL POSTEROriginal post

$150. for both sides. Bank 2 was good, and Bank 1 was loose inside like my bad cat. So now I have a pair of good and a pair of bad. I'll sell the bad cats for metal recycling. The whole purpose of the excercise is to see if the factory Cat stops the PO 430 code. I bought a DEC cat and the code comes up every 40 miles after a reset. Grrrrrr.......

POST 5Original post

Quotes source post: 12571574

Did you get these from a dismantler? That's a great price. Thanks

POST 6 / ORIGINAL POSTEROriginal post

Yes it was a good price; got them from a local Porsche owner (04 C4s); he put on Fabspeed a year or so ago, and was just sitting on them; started at $600. but slowly moved down to clean up his garage. Turns out I knew his father, small world sometimes.

POST 7 / ORIGINAL POSTEROriginal post

I might add, that I have seen them quite often for $300-600 ea., but usually too far. I am looking for a cheap set of 996 mufflers in descent shape to send to California for a "Fister" mod. Also prices are in $CAD.

POST 8 / ORIGINAL POSTEROriginal post

Finally installed the used Porsche OEM cat, and no more codes for the Cat bank 2; I took off a new DEC cat that constantly threw codes every 40 km. (approx. 20mi.) Boring. I now feel it's better to change both cats at once, unless you are replacing one OEM cat with the same equipment, like I did. I believe that when the cats are different cell count, they they have different resistance to exhaust flow, and therefor an unbalanced exhaust. Just my opinion.

POST 9Original post

If you run into any more issues, please know that we offer a sport cat x-pipe for your vehicle with the highest quality HJS 200 cell cats. No check engine light issues, great improvement in sound, and the performance gains are phenomenal

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