9 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHFabspeed Noise
Reported or suspected cause
from your earlier post
Suggestion or failed attempt
No successful repair reported for this finding.
0
Identified cause
1
Suspected cause
0
Reported fixes
Read evidence and context
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Discussions that suspect a cause
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Suspected cause · Original poster
I suspect from your earlier post that these may make the car to noisy for the Castle Combe day.
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Suggestion · Original poster
I am thinking about replacing the back boxes on my 996 for something that sounds a bit more interesting and have been deliberating over the PSE & Fabspeed options.
Leading evidence: 'from your earlier post' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'from your earlier post' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Replace back boxes' (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.
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.
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Suggestion · Original poster
I am thinking about replacing the back boxes on my 996 for something that sounds a bit more interesting and have been deliberating over the PSE & Fabspeed options.
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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Suggestion
They certainly change the character of the car though.
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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These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
Replace back boxes
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1
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Suggestion · Original poster
I am thinking about replacing the back boxes on my 996 for something that sounds a bit more interesting and have been deliberating over the PSE & Fabspeed options.
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.
9 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Porsche Club GB: 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: 20261027T154520Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
I am thinking about replacing the back boxes on my 996 for something that sounds a bit more interesting and have been deliberating over the PSE & Fabspeed options.
The switchable PSE would be my first choice but the Fabspeed option is considerably cheaper.
Does anyone have any noise tests from a car with Fabspeed mufflers or know whether the car would be likely to get through the Track Day noise tests at Castle Combe?
Thanks guys.
i've been reading these posts about different noise exhausts which people are paying thousands for.
If its not making the car go quicker is it worth it? surely a custom exhaust manufacturer could fabricate a nice sounding exhaust for your car and increase performance a lot cheaper. Or, wouldn't an induction kit be a nice sounding cheaper alternative.
just my 2p.
Hi,
If you check out Fab speeds web site they have .mpegs of various Porsche models with there exhausts on.
You can download these and have a listen. The Speed Yellow GT3 just sounds like it's ready for a GT race[
] Awesome.
I've got the fabspeed boxes on my 996C2. Glorious noise but I seriously doubt it will make the track day limits at Donnington (96db). The fabspeed boxes are also a different shape to the PSE boxes and on my car slightly foul the heat shield which cant do much for in car noise and vibration. They certainly change the character of the car though. If you are anywhere near Derby or Uttoxeter you are welcome to meet and have a listen. I did post a wav file in this forum some time ago which may give you an idea.
I have a friend who is lending me a noise meter next week so I can test it. Can anyone advise how/where/ I measure the noise to match the track day test??
Thanks Neil.
They sound great but I suspect that they will be generating more than 96dB!
Please post your test results when you have them.
I am not sure how they measure at the track days, perhaps the Club's Track Day team could advise you.
Malcolm
They get you to rev to 4000 revs and put a noise meter right by the exhaust at Castle Coombe. Other tracks (Donnington for instance I think) are drive by meters.
I have a Tubi set of rear mufflers and they are awesome, perfect fit and noise. Same price as the Fabspeed. Quality wise, they are standard issue for Ferrari and Lambo aftermarket and are tried, tested and trusted by Maranello in Surrey. I cant sing the praises of it enough. Let me know if you want to hear it, i am in Fulham London and Hertfordshire at weekends.
Thanks for the offer James.
I suspect from your earlier post that these may make the car to noisy for the Castle Combe day. I think that I will revisit after the track day and may be in touch.
I have a somewhat shaky video demostrating the fabspeed maxflows on my car.
The picture is very shaky but the sound is good and is IMHO exactly how they sound.
You can see it
here
This is a source reference. Confirm exact model applicability in the original material.
