Planet-9

Re: CEL and backpressure issue w tiptronic S

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5 captured repliesPartial discussion capture · Source accounts, not a confirmed diagnosis

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YOUR RESEARCHRe: CEL and backpressure issue w tiptronic S

Reported or suspected cause

oil catch tank connecting hose

Reported cause

No successful repair reported for this finding.

1
Identified cause: 0
Suspected cause: 0
Reported fixes

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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 report identifying a cause: 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.

Reported cause
As it turned out, it was the oil catch tank connecting hose that had a leak.
Original post Read captured discussion
Re: CEL and backpressure issue w tiptronic S

Frequently discussed work

Use durametric cable

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

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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
My CEL recently came up on my 2008 Cayman S tiptronic and in the midst of rushing things, I used the Durametric cable that came with my Softronic flash to clear the error codes.
Original post Read captured discussion
Re: CEL and backpressure issue w tiptronic S

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Leading evidence: 'oil catch tank connecting hose' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'oil catch tank connecting hose' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Use durametric cable' (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 · 5 captured posts examined · 1 partial discussions

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Use durametric cable

Performed · outcome unconfirmed

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
My CEL recently came up on my 2008 Cayman S tiptronic and in the midst of rushing things, I used the Durametric cable that came with my Softronic flash to clear the error codes.
Original post Read captured discussion
Re: CEL and backpressure issue w tiptronic S

Frequently discussed actions (1)

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

Use durametric cable

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
My CEL recently came up on my 2008 Cayman S tiptronic and in the midst of rushing things, I used the Durametric cable that came with my Softronic flash to clear the error codes.
Original post Read captured discussion
Re: CEL and backpressure issue w tiptronic S

Reported and suspected causes (1)

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

oil catch tank connecting hose

No successful repair reported for this finding.

1
Identified cause: 0
Suspected cause: 0
Reported fixes

Read evidence and context

Discussions that report identifying a cause: 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.

Reported cause
As it turned out, it was the oil catch tank connecting hose that had a leak.
Original post Read captured discussion
Re: CEL and backpressure issue w tiptronic S

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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.

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

Planet-9: 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: 20261027T053112Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1Original post

Re: CEL and backpressure issue w tiptronic S Dear All, My CEL recently came up on my 2008 Cayman S tiptronic and in the midst of rushing things, I used the Durametric cable that came with my Softronic flash to clear the error codes. All I could recall was the error code has some kinda "RKAT" and "Bank 1" and "Bank 2" commands in them. I also recently changed to a SRP kit with the Softronic flash as well as an oil catch tank. Also, I had my headers changed to aftermarket ones with sports cats. Apparently the sports cats aren't the best ones out there and I am giving them around 6 months more before having them replaced. My few questions are : 1) What could be the fault with the CEL? 2) Bearing in mind my ride's with a tiptronic S transmission, would removing the cats from the headers result in a loss of backpressure which I heard is crucial to prevent torque loss like in any auto/tip tranny? 3) Also how loud will it be without cats(only my headers are custom, rest of exhaust is stock) and will it screw up my Softronic flash programming? 4) Could the cats disintegrating result in my CEL fault code. Thank you in advance. Any individual thoughts/expertise is very much appreciated. p.s. I just realize that this may not be the best thread to put the above altho I recently did these mods. Hope admin could help direct this topic to the right thread if necessary.

POST 2Original post

Re: CEL and backpressure issue w tiptronic S 1. Just about anything - it's very hard to speculate without the specific code numbers. 2. I could be wrong, but I don't think the presence or absence of back-pressure in the exhaust system would have any bearing on performance, with regards to what kind of transmission you have. 3. Some members have reported slightly louder exhausts with catless headers (and stock exhaust/secondary cats). I believe that Softronic is (or can be) programmed to prevent a CEL in the absence of the upstream cats. 4. Most definitely - I have had OEM cats go bad twice, and in both cases they threw CELs. Most recently I just had a partially obstructed cat on one side that would only throw a CEL under high flow (e.g. high RPMs) on the track. It was causing enough back-pressure under those circumstances to cause misfire and exhaust code CELs.

POST 3Original post

Re: CEL and backpressure issue w tiptronic S As it turned out, it was the oil catch tank connecting hose that had a leak. Didn't expect such a small hose to cause such a big thing (CEL, increased FC and drop in power). Thanks for your input KS!

POST 4Original post

Re: CEL and backpressure issue w tiptronic S Glad you figured out what it was . . . :cheers:

POST 5Original post

Re: CEL and backpressure issue w tiptronic S What happened to this? I have a very similar problem that only started after I filled up at a cheaper gas station last night. Today I have the CEL with vibration and what can only be described a low noise level (base) spluttering

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