Porsche Club GB

MOT - Near Miss

Add to repair workspace

New repair projectOpen repair workspace

Original source

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

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHMOT - Near Miss

Leading reported evidence

Test i was told

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 have a PSE on the car and when they were doing the emissions test I was told that it had failed as the emissions were too high.
Original post Read captured discussion
MOT - Near Miss

Read full discussion summary

Leading evidence: 'Test i was told' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Test i was told' (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.

Read captured replies

1 matching discussions · 6 captured posts examined · 0 partial discussions

Compare 1 other evidence results

Test with flying colours

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 · Original poster
Anyway, it turned out that once I switched the sports exhaust off (silent) it passed the test with flying colours.
Original post Read captured discussion
MOT - Near Miss

Frequently discussed actions (2)

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

Test i was told

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 have a PSE on the car and when they were doing the emissions test I was told that it had failed as the emissions were too high.
Original post Read captured discussion
MOT - Near Miss

Test with flying colours

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
Anyway, it turned out that once I switched the sports exhaust off (silent) it passed the test with flying colours.
Original post Read captured discussion
MOT - Near Miss

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.

6 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: 20261026T105141Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Guys, I thought I would share with you my experience of when I went to get my car MOT'd on Saturday. I have a PSE on the car and when they were doing the emissions test I was told that it had failed as the emissions were too high. The high emissions could have been caused by a number of things - Oxygen Sensor, Too much fuel, too much air etc. Very difficult to find out without a PIWIS. Anyway, it turned out that once I switched the sports exhaust off (silent) it passed the test with flying colours. Really strange, as I was talking to someone (Roy) about this and was told that they had their car MOT's with the bypass mod and it had passed, no problem. Am I missing something here?

POST 2Original post

I got my MOT done on Friday and it flew through the MOT without any advisories...Not a thing, was told by the MOT guy, who worked on Porsches for 35 years that I have a very tidy example. 1" Bypass mod done last year. Roy

POST 3Original post

Do emissions increase with a bigger bypass then?

POST 4Original post

I can't think of a reason why they would increase. The silencers are after the cats, so you wouldn't expect emissions to be affected. I know of dozens of people on the forums who have done these mods, and never heard of it causing an MOT failure. Also, in the USA the Californians have their smog test, which I believe is tougher than our test.

POST 5Original post

Can't see why a bypass would make any difference,it's the same exhaust gas,just not as much going through the final silencers.

POST 6 / ORIGINAL POSTEROriginal post

talking to a few people at the Ace meet yesterday, it could be that the engine was not running hot. I suppose it doesnt matter now, as it passed anyway. Thanks for your posts!!

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