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aftermarket muffler drone, returning to stock - 986 Forum - The Community for Porsche Boxster & Cayman Owners

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YOUR RESEARCHaftermarket muffler drone, returning to stock - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Leading reported evidence

Install fvd brombacher sound version muffler

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

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Performed · outcome unconfirmed

I just installed a fvd brombacher sound version muffler.

aftermarket muffler drone, returning to stock - 986 Forum - The Community for Porsche Boxster & Cayman Owners
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Leading evidence: 'Install fvd brombacher sound version muffler' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Install fvd brombacher sound version muffler' (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 · 14 captured posts examined · 0 partial discussions

Compare 3 other evidence results

Install muffler inserts into the outlet tips

Performed · outcome unconfirmed

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 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

I have installed muffler inserts into the outlet tips to dramatically reduce drone .

aftermarket muffler drone, returning to stock - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Use oe muffler, 2.7l

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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
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

Decided to use an OE muffler, 2.7L from a '02.

aftermarket muffler drone, returning to stock - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Use tapatalk

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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

Sent from my SM-N960U using Tapatalk

aftermarket muffler drone, returning to stock - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Frequently discussed actions (4)

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

Install fvd brombacher sound version muffler

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

I just installed a fvd brombacher sound version muffler.

aftermarket muffler drone, returning to stock - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Install muffler inserts into the outlet tips

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

I have installed muffler inserts into the outlet tips to dramatically reduce drone .

aftermarket muffler drone, returning to stock - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Use oe muffler, 2.7l

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

Decided to use an OE muffler, 2.7L from a '02.

aftermarket muffler drone, returning to stock - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Use tapatalk

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

Sent from my SM-N960U using Tapatalk

aftermarket muffler drone, returning to stock - 986 Forum - The Community for Porsche Boxster & Cayman Owners
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.

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

  • 986Forum: 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: 20261027T075545Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Hi Eveyone, lurker with my first thread here... 97 Boxster, 5 speed Aftermarket exhaust w/equal-length headers, high-flow cats, twin tip muffler. Don't know the mfg, but the quality is decent. However, bad exhaust drone due the muffler design. Would like to return to stock starting with the muffler, have a couple questions... What is the distance inlet to inlet on the stock rear muffler? Trying to gauge if I can fit the stock muffler to the existing setup. For reference, the distance on the aftermarket muffler is approx 28". Lastly, is the 2.7L or 3.2L rear muffler a better choice compared to the 2.5L? From what I've read it appears so, but I'm not understanding why they might be better. Thanks in advance! Loving my Boxster.

POST 2Original post

My suggestion is to just go 100% stock. Otherwise you may have issues, if you want more sound (originals from the first gen are lacking in the flat 6 sound department) you could spring for fsbspeed, porsche sport exhaust, or akrapovic. Just my opinion though. Sent from my SM-N960U using Tapatalk

POST 3Original post

I just installed a fvd brombacher sound version muffler. No drone 2k rpm its 88db in a closed garage at 4k 99 to 100 ish. Sounds great.

POST 4 / ORIGINAL POSTEROriginal post

Thanks for the feedback! I think I'm somewhere in the middle of both recommends right now. Plan is to incrementally return to stock, and I'll start with the muffler. So I'm thinking the stock muffler is wider, and that I'll need the stock inlet tubes to mate up with the aftermarket cats. The cats appear to mounted and exit similarly to stock, so it might just work out. Right now, I'm targeting the 2.7L muffler and hanger setup. If it ends up being too quiet, I may add the 'sport exhaust' bypass mod. Main priority at the moment is to loose the drone.

POST 5Original post

I have installed muffler inserts into the outlet tips to dramatically reduce drone .

POST 6Original post

If you have sport cats you might want to keep those, helps the motor breath.

POST 7Original post

Quotes source post: 594207

I've had the FVD Brombacher sound version for many years, with cat delete pipes for a couple years. Awesome sound with zero drone, but around $1k.

POST 9Original post

Muffler inserts or exhaust inserts are generally perforated tubes with some type of washer or flange at one end to hold it in place . As an example look up Car Chemistry but there are many brands and styles .

POST 10Original post

Quotes source post: 594328

+1 on the FVD Brombacher I had one on the 987CS and it sounded great with 0 drone... but sold it, because it didn't fit on the 981CS Note: I actually had the SpeedArt (from the same company that manufactures the FVD)

POST 12Original post

Quotes source post: 594328

I too have this system. Love it! No drone and sounds great The only issue I see is that you have a lot of rust under there. It is not going to come apart easily. Lots of PB Blaster.... LOTS!

POST 13Original post

Yeah I'm thinking he might need new clamps and hardware.

POST 14 / ORIGINAL POSTEROriginal post

Finally finished the muffler, sorry for the delay. Decided to use an OE muffler, 2.7L from a '02. Kept the headers and hi-flo cats for now. Required a bit of work the mate with the stock muffler and hardware. Happy with how it turned out. Sound is very good at idle, and with revs. Will report back with road sound and drone (hopefully the lack of). All in, about $250 for the muffler and hardware needed to mount the later hanger system to the '97.

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