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Porsche Club GB

Confirmation of OPC advice

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

Discussion summary

YOUR RESEARCHConfirmation of OPC advice

Leading reported evidence

Clean tail pipes

Performed · outcome unconfirmed

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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 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 · Original poster

Both tail pipes were cleaned prior to the start of the day and therefore started from the same point.

Original post Read captured discussion
Confirmation of OPC advice
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Leading evidence: 'Clean tail pipes' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Clean tail pipes' (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 4 other evidence results

Disconnect battery as outlined by ian w here

Suggestion or failed attempt

No successful repair reported for this finding.

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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

All I can suggest is that you try resetting the DME by disconnecting the battery as outlined by Ian W here:

Original post Read captured discussion
Confirmation of OPC advice

Replace fuelling, either

Suggestion or failed attempt

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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

There isn't anything that an OPC can 'retune' to change the fuelling, either.

Original post Read captured discussion
Confirmation of OPC advice

Reset dme by

Suggestion or failed attempt

No successful repair reported for this finding.

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Reported fixes
0
Unsuccessful attempts
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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

All I can suggest is that you try resetting the DME by disconnecting the battery as outlined by Ian W here:

Original post Read captured discussion
Confirmation of OPC advice

Run slightly rich

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes
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Unsuccessful attempts
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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.e.The left cylinders always run slightly rich when compared to the right.

Original post Read captured discussion
Confirmation of OPC advice
Frequently discussed actions (5)

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

Clean tail pipes

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that performed work without a confirmed outcome
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.

Performed · outcome unconfirmed · Original poster

Both tail pipes were cleaned prior to the start of the day and therefore started from the same point.

Original post Read captured discussion
Confirmation of OPC advice

Disconnect battery as outlined by ian w here

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

All I can suggest is that you try resetting the DME by disconnecting the battery as outlined by Ian W here:

Original post Read captured discussion
Confirmation of OPC advice

Replace fuelling, either

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

There isn't anything that an OPC can 'retune' to change the fuelling, either.

Original post Read captured discussion
Confirmation of OPC advice

Reset dme by

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

All I can suggest is that you try resetting the DME by disconnecting the battery as outlined by Ian W here:

Original post Read captured discussion
Confirmation of OPC advice

Run slightly rich

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.e.The left cylinders always run slightly rich when compared to the right.

Original post Read captured discussion
Confirmation of OPC advice
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: 20261026T190023Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Having returned from a 280 mile round trip on A & B roads not motorways I noticed that the left exhaust tail pipe is slightly black with exhaust deposits as opposed to the right hand side that is grey. Grey being what I consider to be a normal colour. Both tail pipes were cleaned prior to the start of the day and therefore started from the same point. On checking with my local OPC if my engine required a retune I was told this is normal. i.e.The left cylinders always run slightly rich when compared to the right. Can anyone confirm this point and if so explain why this should be the case. My car is a 996 C2, 3600cc with 35k on the clock. Registered in June 2002. Many thanks

POST 2Original post

I would consider the normal colour of mine to be black on both sides. There isn't anything that an OPC can 'retune' to change the fuelling, either. All I can suggest is that you try resetting the DME by disconnecting the battery as outlined by Ian W here: http://www.porscheclubgbforum.com/fb.asp?m=279182 It sounds to me like it might be a dodgy oxygen sensor, although this would normall trigger the Check Engine light. A diagnostic check to view the oxygen sensor outputs should show if there is a fault.

POST 3Original post

What the OPC said is crap! especially since the left exhaust pipe is from the RIGHT bank of cylinders.

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