So the best project to do while at home during these time is "Dynamat"; I've spent the past couple days doing work on the car; couldn't get good pictures underneath the vehicle so don't have much to show of what I did.
I saw some articles here and heard someone refer to "Singing Bars" and actually I missed this; this was one of the last things I did before I put the belly panel up; Video attached.
If you read in this prior forum I mentioned a clicking or clunk sound every time the accelerator is pushed and released; as the bolt to the transmission was already completely fastened I managed to put a piece of Dynamat right next to the transmission piece or where it's assuming there is a "click" and sure enough it sounds MUCH BETTER" now it's like a faint click than a clunk.
The car is Completely different! I kid you not, I don't hear any of the rattles and the vibrations are reduced in my opinion and I am not even done yet; I still have to do the inner wheel wells above the plastic piece, both doors, the carpet, and the front dash.
For the belly panel tesla already includes sound damping in 3 piece sheets that were cracking and dusting on the edges so I taped up everything and added more to the under belly panel.
Overall without it being complete and the dash not even done or doors not even complete yet I consider this 100% worth while from the test drive I did after.
I thought I ordered to much dynamat but it's perfectly enough; I think I have 3-4 sheets left and still have the doors and upper portion of car to do; inner wheel wells and under dash. and might have to purchase more for under the carpet and seats; not sure.
Keep in mind I am hard of hearing; I am 35% hearing loss in my left and 30% in my right so for me this was a perfect solution; now I barley hear anything lol. But it does seem the car is more grounded in sound and the squeeky '87-91 Porshe thunderbird rattles are gone.
singing bars.mov
before.mov
after.mov