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Mid-Ohio Sports Car Course Track Video & Cat Failures

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THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

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YOUR RESEARCHMid-Ohio Sports Car Course Track Video & Cat Failures

Reported or suspected cause

loose muffler

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No successful repair reported for this finding.

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Identified cause: 1
Suspected cause: 0
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Discussions that suspect a cause: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

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Suspected cause · Original poster
This led me believe that it was probably a loose muffler.
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Mid-Ohio Sports Car Course Track Video & Cat Failures

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Leading evidence: 'loose muffler' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'loose muffler' (1 discussions; 0 report identifying it and 1 suggest it). 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 · 1 captured posts examined · 0 partial discussions

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.

loose muffler

No successful repair reported for this finding.

0
Identified cause: 1
Suspected cause: 0
Reported fixes

Read evidence and context

Discussions that suspect 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.

Suspected cause · Original poster
This led me believe that it was probably a loose muffler.
Original post Read captured discussion
Mid-Ohio Sports Car Course Track Video & Cat Failures

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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.

1 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: 20261026T213932Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

OK my fellow 996 brethren, I have posted track video from Mid-Ohio for you viewing pleasure. Don't be too harsh. https://rennlist.com/forums/racing-and-drivers-education-forum/201881-track-video-from-the-mid-ohio-sports-car-course.html Also, I thought I would pass on this info about the cause of my recent catalytic converter failures. Here are the details. After my last run at VIR earlier this year, my car sounded AWFUL at idle, and even worse after startup on a cool day. It sounded like I had valve or chain problems that would cost $$$$$$$ BUT, the car ran fine and sounded great at speed. This led me believe that it was probably a loose muffler. Kurt M. was kind enough to put my car up on his lift, and after banging around awhile, we (being the royal we) determined that it was a bad cat. It didn't sound bad at speed because the exhaust pressure held the inner part still against the cat. Sure enough, that was the problem. Deja Vu all over again. After my last run on the second day at Mid Ohio, my car sounded AWFUL at idle. Many there told me it sounded very bad, but I recognized the sound. Sure enough, the OTHER cat failed. I just found out that the cats failed because my plugs were bad (at only 15k ) so fuel apparently was getting dumped into the cats where it was igniting and burning out the cores. Good news is that the problem will be fixed and the cats are covered under warranty (thank god). Bad news is that the plugs are not, but what can you expect.

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