8 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHDynamat installation
Leading reported evidence
Fill hollow cavities where the rear spakers go
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
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0
Unsuccessful attempts
1
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Discussions that performed work without a confirmed outcome
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Performed · outcome unconfirmed
What I did was remove the seats and carpet and put down four layers of dynamat extreme, put a foam pad in the trunk under the carpet and switched to Bridestone Potenza RE 950 tires, oh and I also filled the hollow cavities where the rear spakers go with foam.
Leading evidence: 'Fill hollow cavities where the rear spakers go' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Fill hollow cavities where the rear spakers go' (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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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 installed a large quantity of Dynamat in my 944 but have not yet installed it in my 996.
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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Performed · outcome unconfirmed · Original poster
I'm using my 996 as my driver as much as possible but the road and tire noise are more than I like.
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
Fill hollow cavities where the rear spakers go
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
What I did was remove the seats and carpet and put down four layers of dynamat extreme, put a foam pad in the trunk under the carpet and switched to Bridestone Potenza RE 950 tires, oh and I also filled the hollow cavities where the rear spakers go with foam.
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.
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: 20261026T122219Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Has anyone installed Dynamat sound insulation in their 996 ?
I'm using my 996 as my driver as much as possible but the road and tire noise are more than I like. Of course, there is nothing as quiet as a Lexus but I would like the luxury of 996 performance and at least Corolla quiet.
Dynamat reccommends instalation in the door panels first. Other obvious areas would be wheel wells and the bare metal floor under the seats in a 996.
Any experiences out there ?
I would be interested in this too. With the 911, I would focus first on the rear of the cabin. It seems like a lot more road noise gets in from the bigger, more heavily weighted rear tires.
Under the seats is an obvious one. I was really surprised to see that they didn't carpet that area when I got the car. I can't believe it saves that much performance robbing weight or profit margin...
I installed a large quantity of Dynamat in my 944 but have not yet installed it in my 996. This is a copy and paste of what I posted in the 944 forum for a similar thread.
"I was able to reduce the interior souond levels of my 944 by 10 dBs as measured by a radio shack SPL meter. What I did was remove the seats and carpet and put down four layers of dynamat extreme, put a foam pad in the trunk under the carpet and switched to Bridestone Potenza RE 950 tires, oh and I also filled the hollow cavities where the rear spakers go with foam. When I get the chance, I will also probably undercoat the wheel wells with dynamat spray undercoating and probably undercoat a lot of the rest of the car too.
My advice is to buy dynamat extreme. Original dynamat is terrible by comparison. You can get it very cheap from audioetc1.com. The bulk pack that crutchfield charges $249.00 for (
http://www.crutchfield.com/S-Rpc4OY...&search=dynamat
) is $131.00 at audioetc1.com (
http://audioetc1.com/product_info.p...ucts_id/107990)
. You should also throw a foam mat under the carpet in the trunk. Check out the dynaliner (
http://audioetc1.com/product_info.p...ducts_id/107991
) or the tack mat (
http://audioetc1.com/product_info.p...ducts_id/107994
)
To really make a difference it will probably take two of those bulk packs. Dynamat is not cheap but it does work."
Here's a link to the rest of the thread:
https://rennlist.com/forums/924-931-944-951-968-forum/206540-interior-sound-levels.html
Thanks for the info Fishman. I want to call you Greg for some reason. Is that right ? It seems there was a Boxster guy with that handle.
I guess there's only a few of us that don't need to go faster but want to go more comfortably.
Lexpilot,
My first name is John. There is another Rennlister whose username is, I think, Greg Fishman. Let me know if you have any more questions about Dynamat.
