Porsche Club GB

Replacement exhaust

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

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHReplacement exhaust

Leading reported evidence

Run before

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
I took it to our local MOT tester who advised low use cars with old fuel are regular emission fails and tells owners to refuel with premium unleaded and go for a long run before testing.
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Replacement exhaust

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Leading evidence: 'Run before' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Run before' (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 · 3 captured posts examined · 0 partial discussions

Compare 3 other evidence results

Test centre advise was the likely cause / remedial action

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
What specific part of the emission test has failed and what did the MOT test centre advise was the likely cause / remedial action?
Original post Read captured discussion
Replacement exhaust

Test has failed and what did the mot

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
What specific part of the emission test has failed and what did the MOT test centre advise was the likely cause / remedial action?
Original post Read captured discussion
Replacement exhaust

Use cars

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
I took it to our local MOT tester who advised low use cars with old fuel are regular emission fails and tells owners to refuel with premium unleaded and go for a long run before testing.
Original post Read captured discussion
Replacement exhaust

Frequently discussed actions (4)

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

Run before

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
I took it to our local MOT tester who advised low use cars with old fuel are regular emission fails and tells owners to refuel with premium unleaded and go for a long run before testing.
Original post Read captured discussion
Replacement exhaust

Test centre advise was the likely cause / remedial action

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
What specific part of the emission test has failed and what did the MOT test centre advise was the likely cause / remedial action?
Original post Read captured discussion
Replacement exhaust

Test has failed and what did the mot

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
What specific part of the emission test has failed and what did the MOT test centre advise was the likely cause / remedial action?
Original post Read captured discussion
Replacement exhaust

Use cars

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
I took it to our local MOT tester who advised low use cars with old fuel are regular emission fails and tells owners to refuel with premium unleaded and go for a long run before testing.
Original post Read captured discussion
Replacement 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.

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.

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

Outcome without a verified action link
It worked for me
Original post Read captured discussion
No unique explicit quoted action; no causal link assigned

Generation: 20261026T163944Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Afternoon all. My 996 Carrera 4 convertible (2002 model) has today failed the MOT on emissions. Anyone advise of the best place to source a new exhaust system from please. Thanks in advance.

POST 2Original post

Is it definitely faulty exhaust / catalytic converter? What specific part of the emission test has failed and what did the MOT test centre advise was the likely cause / remedial action? Had relatives 996 that regularly struggled with emissions test and came down to low use and ageing fuel. I took it to our local MOT tester who advised low use cars with old fuel are regular emission fails and tells owners to refuel with premium unleaded and go for a long run before testing. We've noticed emission levels are lower with fresh fuel. The motorcycle ULEZ compliance tester advised the same.

POST 3Original post

Before you spend out try Forte Petrol Emission Reducer, you can get it on the internet Put it in the fuel tank ,probably around 50% of fuel in the tank when adding and go for a drive, or use it until low top up and retest It worked for me

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