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Can I Repair My Mufflers?

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

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YOUR RESEARCHCan I Repair My Mufflers?

Leading reported evidence

Repair successfully

Suggestion or failed attempt

No successful repair reported for this finding.

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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 contain suggestions
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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.

Suggestion · Original poster

The passenger-side muffler has started to rattle on my 996 and I�m wondering if anyone has had theirs cut open and repaired successfully.

Can I Repair My Mufflers?
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Leading evidence: 'Repair successfully' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Repair successfully' (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 · 18 captured posts examined · 0 partial discussions

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Replace cans

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
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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.

Suggestion

I�d consider how much weight you might save by replacing the cans with aftermarket ones.

Can I Repair My Mufflers?

Replace of them

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

Just replace both of them.

Can I Repair My Mufflers?
Frequently discussed actions (3)

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

Repair successfully

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

The passenger-side muffler has started to rattle on my 996 and I�m wondering if anyone has had theirs cut open and repaired successfully.

Can I Repair My Mufflers?

Replace cans

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�d consider how much weight you might save by replacing the cans with aftermarket ones.

Can I Repair My Mufflers?

Replace of them

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

Just replace both of them.

Can I Repair My Mufflers?
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.

18 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: 20261026T144035Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

The passenger-side muffler has started to rattle on my 996 and I�m wondering if anyone has had theirs cut open and repaired successfully. I�ll replace it eventually but it�s a pretty expensive part I have more important components to budget for first. Thanks!

POST 2Original post

Quotes source post: 18456536

Just replace both of them. If oem are too expensive there are aftermarket stainless back boxes that you can use. Or depending which coast you're nearest, you could try ladismantlers.com or dcauto for used. Depending where you live and the condition of the brackets and bolts, be prepared for some extra effort, and possibly cutting, to get the replacement done. I pre soaked with pb blaster, I think it helped, but my car is a southern car, so not much if any corrosion. For my 996.1 the stock mufflers were very boring so I went aftermarket valved and don't regret it. Golf club mode is nice, but mostly it's in hooligan mode. No tickets yet

POST 3Original post

Mine were coming apart so I just opted to replace them with some ebay ones not really worth fixing stock ones. Worst part is all the old hardware on the car is most likely trashed.

POST 4Original post

You may want to consider repacking the mufflers. I wasn't about to throw out stainless steel Fabspeed Maxflos just because of some rattling inside.

POST 5Original post

^^^ Curious what was the source of the rattle on the Fabspeeds ? Broken welds ? Loose packing ? To the OP can you cut open and reweld the mufflers yourself ? If yes I say go for it . But if you have to pay someone it may not be worth the effort . Could be a fun DIY project . Maybe gut the interior for better sound and less weight .

POST 6Original post

Consider talking to the folks at Cantrell Motorsports about a Carnewal modification. They open up the mufflers and may be able to repair. Nice tone and no drone.

POST 7Original post

The stock mufflers are quite heavy. I�d consider how much weight you might save by replacing the cans with aftermarket ones.

POST 8Original post

Quotes source post: 18458019

It was loose packing.

POST 9Original post

When you installed new packing how did you hold it in place ? Safety wire ?

POST 10Original post

Quotes source post: 18458295

Yes, stainless steel wire, wrapped around, with the ends twisted.

POST 11Original post

My 996 has sport exhaust and they were rattling. my neighbor is a welder and we cut the cans open and tack welded the baffles. then welded the “door” that we cut for access. been about 4 years and no new rattles BTW, there was no packing in the cans, just empty space and a baffle, but maybe that’s because of the sport exhaust

POST 12Original post

Inside 996 mufflers: https://rennlist.com/forums/996-foru...6-muffler.html

POST 13Original post

[Image-only post; no author-written text. Original image references:] https://cimg8.ibsrv.net/gimg/rennlist.com-vbulletin/296x435/20221121_210907_854d095cda598a1e2c7fc6a41f81c9741c030bd9.jpg

POST 14Original post

It�s quite the work of art in sound design.

POST 15 / ORIGINAL POSTEROriginal post

Thanks. You are all saints.

POST 16Original post

Quotes source post: 20181455

You do realize, quite a few here are currently on a work release program.

POST 17Original post

It�s a bit louder but the muffler bypass pipes aren�t terrible and can be had on Amazon for quite reasonable price.

POST 18Original post

Quotes source post: 18456536

Easy enough to do, just find a competent welder. You might only need to drill a small hole and plug weld through to pick up the loose baffle plate. Just about any muffler shop will give it a go, just don't tell them its from a Porsche to avoid the inevitable additional markup they might add.

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