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911uk

M&M Exhaust System

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Original source
15 captured repliesPartial discussion capture · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHM&M Exhaust System

Leading reported evidence

Install inc vat, delivery, import, etc

Performed · outcome unconfirmed

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 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

For this price is much the same for either, around £2.1k fitted inc vat, delivery, import, etc.

M&M Exhaust System
Read full discussion summary

Leading evidence: 'Install inc vat, delivery, import, etc' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Install inc vat, delivery, import, etc' (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 · 15 captured posts examined · 1 partial discussions

Compare 4 other evidence results

Recommend 100%

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

Would recommend 100%

M&M Exhaust System

Recommend these highly enough

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

I really can't recommend these highly enough, so simple, lightweight, beautifully made.

M&M Exhaust System

Replace cats too

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

I think the delta is x2 but, from what I can see, the Kline option includes cats which closes the gap, if you want to replace the cats too.

M&M Exhaust System

Run exhaust

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

Personally here in Switzerlanad I cannot afford to run an exhaust that screams for attention.

M&M Exhaust System
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.

Install inc vat, delivery, import, etc

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

For this price is much the same for either, around £2.1k fitted inc vat, delivery, import, etc.

M&M Exhaust System

Recommend 100%

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

Would recommend 100%

M&M Exhaust System

Recommend these highly enough

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 really can't recommend these highly enough, so simple, lightweight, beautifully made.

M&M Exhaust System

Replace cats too

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 think the delta is x2 but, from what I can see, the Kline option includes cats which closes the gap, if you want to replace the cats too.

M&M Exhaust System

Run exhaust

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

Personally here in Switzerlanad I cannot afford to run an exhaust that screams for attention.

M&M Exhaust System
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.

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

  • 911uk: 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: 20261026T052503Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

I realise that this has probably been discussed numerous times in the past, but the Search function didn't seem able to identify relevant threads. So, I'm considering an after-market exhaust system for a late 996 GT3 and I've looked at the usual suspects like Cargraphic, Scart, etc. The Street Exhaust from M&M seems to be good value and I recall hearing positive comments about them in the past. Does anyone have direct experience with these systems? I'm particularly concerned with drone, but the quality of the sound is also obviously important too.

POST 2Original post

Interesting, just going through the same process myself for my 996.2 gt3. I'm going cat back boxes only as don't want to get into drone, emissions, too much noise issues. Ended with a toss up between M&M and cargraphic mid sound. Decided on the cargraphic option. Those that know on here seem to think little to choose between them. Just waiting for confirmation on delivery from Germany given current situation on imports, etc. Hoping to fit in April.

POST 3Original post

I have had a few M&M Exhausts, never had a problem. Would recommend 100%

POST 5 / ORIGINAL POSTEROriginal post

I did consider the Cargraphic but from memory they were a lot more expensive. I'm looking at somewhere around £4,500 after VAT and shipping for the M&M.

POST 6Original post

I'm only going with back boxes, not a full system. For this price is much the same for either, around £2.1k fitted inc vat, delivery, import, etc. based on quotes from a couple of indies.

POST 7Original post

Back boxes? Do you mean the side ones? I really can't recommend these highly enough, so simple, lightweight, beautifully made. https://www.kline-innovation.com/exhaust-collection/porsche/996-2/porsche-996-gt3-exhaust/

POST 8Original post

Yes side boxes. Absolutely agree Kline are on another level but so too is the price.

POST 9Original post

I know price is obviously a consideration but, end of the day, it's one of the worlds great sports cars... A modest delta in price vs your enjoyment of the car vs added value come resale time. Just my man maths :thumb: :floor:

POST 10Original post

Can't disagree with you sentiment and yes an amazing sports car. Had mine for 8 years and can't see me selling it any time.

POST 11 / ORIGINAL POSTEROriginal post

What sort of delta are we talking about?

POST 12Original post

Nine Excellence are an agent for Kline and you can price up Kline products on the 9e website. I think the delta is x2 but, from what I can see, the Kline option includes cats which closes the gap, if you want to replace the cats too.

POST 13Original post

You can mail kline direct at: [email removed] [email removed] If you are willing to consider import etc...might be worth direct. Regards, k

POST 14 / ORIGINAL POSTEROriginal post

Can anyone comment on the difference in sound between the inconel and stainless steel versions of the Kline exhaust? Or even the Cargraphic and M&M exhausts?

POST 15Original post

I would also be interested in this. Personally here in Switzerlanad I cannot afford to run an exhaust that screams for attention. I am interested in a bit of sound (997 gt3 tone would be my favorite), weight reduction and power. Speaking of power, when going for the 200 cel cat's, should you go with a merging X pipe or retain the separate exhaust flow?

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