Is it too loud?? **Sound Deadening Project**

[Rovert]

There must be a much cheaper alternative. I don't see it being super scientific about material used.

[Ssparrow]

Good work Trevor! I would like to do this as well. The Dynamat is so dam pricey.

I just bought some of this stuff. 18 square feet for 35 bucks. Seems slightly cheaper than dynamat. I'm sure 18 sq feet is plenty.



I also bought some dynaliner equivalent by the same brand. 35sq feet for 50 bucks. Im going to try to use this stuff for tackling a few rattles I have near the dash as well.






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[ryankokesh]

I used that $35 stuff in the Prius. Was very impressed considering the price.


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[das boots]

I just bought some of this stuff. 18 square feet for 35 bucks. Seems slightly cheaper than dynamat. I'm sure 18 sq feet is plenty.



I also bought some dynaliner equivalent by the same brand. 35sq feet for 50 bucks. Im going to try to use this stuff for tackling a few rattles I have near the dash as well.






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Let us know how this comes out especially with a 157 mil thickness. I don't know how much sound insulation a 80 mil thick would do. Kinda thin.

[Pip]

Interesting. I tried dynamat in my trunk to remove the exhaust drone but just went back to a modded OEM muffler to remove it. I don't believe I hear any intake like I did on the M54 since the metallic sounds of the S54 overwhelm and at WOT it is a pretty even mix of exhaust and engine. Maybe I'm hearing the intake but it is just not what I'm used to hearing from the M54.


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[ZHPizza]

Just came across this thread and wanted to thank you for taking the time to share your method/results.

Also confused as to why there isn't an update about the change in acoustics with the CSL trunk lid?????

[BMWCurves]

Just came across this thread and wanted to thank you for taking the time to share your method/results.

Also confused as to why there isn't an update about the change in acoustics with the CSL trunk lid?????

An ass that thicc has to muffle exterior noise to some extent.

[Rovert]

Just came across this thread and wanted to thank you for taking the time to share your method/results.

Also confused as to why there isn't an update about the change in acoustics with the CSL trunk lid?????

Haha.

CSL lid isn't made of metal. It's sound resonance is controlled and sporty with a bit of a lip. But you can't hear it, you can only see it.