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Discussion summary
YOUR RESEARCHHow can I tell if my exhaust is stock?
Leading reported evidence
Inspect by hartech only a month ago (they didn't comment
Performed · outcome unconfirmed
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Read evidence and context
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Performed · outcome unconfirmed · Original poster
I'm sure they're not blown as there's absolutely no droning at all, and it was fully inspected by Hartech only a month ago (they didn't comment on a modified exhaust though).
Leading evidence: 'Inspect by hartech only a month ago (they didn't comment' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Inspect by hartech only a month ago (they didn't comment' (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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Inspect by hartech only a month ago (they didn't comment
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 · Original poster
I'm sure they're not blown as there's absolutely no droning at all, and it was fully inspected by Hartech only a month ago (they didn't comment on a modified exhaust though).
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.
7 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: 20261026T200546Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Odd question, I know, but I've bought (and owned for just over a month) a 996C2 facelift. I've never owned another one before, and I don't know anyone else with a similar car to compare it too.
The reason I'm questionning is that it does seem pretty loud. Yesterday I had to park in an underground carpark and the noise from my motor was incredible (in a very good way), I've noticed similar things when driving in tunnels or under motorway bridges.
Given the number of people who upgrade to a PSE (I know I've not got that) or modify their back boxes in some way, I'd assumed that the stock exhaust would be a bit dull - which is why I'm wondering if the previous owner modified the exhaust in any way.
Any ideas how I can check and what I should be looking for?!
Thanks!
Sounds as if someone in the past has either done the permanent PSE or the Ottle mod.
Look underneath at the boxes to see if this has been done, Ottle will be obvious pipes linking the pipe going into the silencer to the pipe coming out. Normally using 1 - 1.5" bore tubing.
PSE not as easy to see but here is a picture of one I was building:
definitely sounds like its modded in some way, as Lloyd says, (presuming its not just blown at the seams) The standard 996 mufflers are disappointingly quiet in all circunstances.
I assume they look phyically like the standard boxes, they are very distinctive in shape.
Ok, I'll take a look underneath when I'm next at home (Saturday). It does sound like they're not stock though, that or I'm easily impressed by the noise...
I honestly hadn't noticed the noise much previously. But then it's been cold and I've had the windows up most of the time. The wife has commented that she can hear me driving down our road though! I'm sure they're not blown as there's absolutely no droning at all, and it was fully inspected by Hartech only a month ago (they didn't comment on a modified exhaust though).
Hartech would certainly have noticed if it was not a stock exhaust, although they may have thought you knew so didnt see any need to mention it. Give them a call
Cheers guys, I'm sure I didn't see anything detailed on Hartech's report. I'll get a clearer idea when I take a closer look.
I just don't want to pay for a modification that I've already got
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