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Porsche Forum Australia

By pass pipes on 997.

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

Discussion summary

YOUR RESEARCHBy pass pipes on 997.

Leading reported evidence

Run cat converters

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 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion · Original poster

I would still be running the cat converters...

By pass pipes on 997.
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Leading evidence: 'Run cat converters' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Run cat converters' (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 · 8 captured posts examined · 1 partial discussions

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Use drone in the cabin will drive you crazy

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 hope you like drone ,,,they are really only something you would want on the track ,,for normal street use the drone in the cabin will drive you crazy ,,it is really bad sounds terrible ...

By pass pipes on 997.
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.

Run cat converters

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 would still be running the cat converters...

By pass pipes on 997.

Use drone in the cabin will drive you crazy

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 hope you like drone ,,,they are really only something you would want on the track ,,for normal street use the drone in the cabin will drive you crazy ,,it is really bad sounds terrible ...

By pass pipes on 997.
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.

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

  • Porsche Forum Australia: 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: 20261026T113718Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Any one installed the muffler delete by pass pipes on their water cooled car? a couple company’s make em and I’m happy for LOUD. I’ve seen a lot of the same modes on YouTube , and they are an easy install and de install if u want to go back to standard doing it myself I don’t give a shit about waking up the neighbors.... 👍 All I really want to know is would I need a re flash or tune to suit.? fabspeed make a set , and they have a vid on YouTube also its for my 997s

POST 2Original post

I hope you like drone ,,,they are really only something you would want on the track ,,for normal street use the drone in the cabin will drive you crazy ,,it is really bad sounds terrible ... try after market system ,,,,X pipe  or just mufflers.. or alternatively do a Fister D or Gundo mod on the OEM mufflers .. Fister D mod  1.3/4 inch bypass pipe ,,you can go as large as 2.5 inch cut away of OEM mufflers

POST 3Original post

From what I've read I second Raven's comments - seems to create a lot of drone and loss of backpressure causes torque loss low down. Mufflers + xpipe + headers are the only way to go. I'd go a minimum 100cel cats and not go catless because I have a environmental concious.

POST 4Original post

I'm on the verge of doing the Gundo hack, but would really like to hear the sound in person first... Anyone with the mod in Sydney that's available to demonstrate the sound (preferably on a 997.1 Carrera S)?

POST 5Original post

Quotes source post: 281005

The Gundo is a cheap mod that sounds ok and i think worth doing for some extra bark, not droney on the freeway either, mine is a 996.2.

POST 6 / ORIGINAL POSTEROriginal post

Quotes source posts: 280928, 280994

I’m not too fussed on the dron .. I used to  race  loud road  bikes and dirt bikes  for many years and ear plugs work wonders... i don’t do too much highway or city driving. I usually only drive back roads in the country and hardly ever it’s doing same RPM for very long I totally understand how annoying it would be driving on a long highway sitting on 120.. I would and might try the hack, but I was on the lines of thinking a little more free revving engine .. well that’s how u can squeeze a few extra hp out of a bike with a good tune . would a tune be needed if I do this mod? The fabspeed website has a few vids. For 600 bucks , if I don’t like it or have to drive to Melbourne , I can put stock pipes back on im just a bit of a hoon.. . I would still be running the cat converters... only removing mufflers . Still legal except for sound hahaha,,, environment conscious... maybe buy a Prius?? Plus I don’t have a spare 12 k laying around to spend on a full system Yea I’m thinking about hak but it’s a bit of a hassle to reverse... I was just going to put standard pipes away in case I need to do a trip to Phillip island or something. I had a set of mufflers I bough from this forum a few years ago for a grand ... sounded graet but I can’t seem to find a good set of pipes cheap... Full systems are way expensive, may as well sell my car and put the 12 k into a 997 turbo.. lol have u got the link to the aftermarket pipes you mentioned?

POST 7Original post

These might work. https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com.au%2Fulk%2Fitm%2F292950528027

POST 8 / ORIGINAL POSTEROriginal post

Quotes source post: 281261

Cheers... I’ll find out if they would fit 3.8 motor.. if not I might ask my local exhaust shop to make me a set I think $695USD For a couple of mandrill bends is a bit rich from fabspeed

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