As the diff lies directly under the trunk floor pan I believe that you should get some relief from the noise. I am very happy with the results I have gotten from the Quietcoat. I was a bit sceptical when I was applying it, but for me, the results were amazing.

 

Interesting... I'll be keeping an eye to this thread.

 

subscribing

 

When you are under the car coating the underbody, you can see that there is existing undercoating but it tends to not exist in the transaxle tunnel or the resonator/differential/evap canister area (bare metal on my '01). I also noticed that right above the muffler cans are 2 exposed holes in the main frame beams that run front to back. I glued some dynomat over those and then coated it over with the quietcoat to give it a more finished look. There is an exposed area right in front of the rear wheels where the roofwell drains into that is bare metal as well.

As a side note, I had my softtop replaced last week and I noticed a definite increase in my exhaust note which I am attributing to the dealership cleaning out the drain tubes for the top since I can't see anything else that was changed...

I used about a pint to 3 coat cover all this. I will probably do another 3 coats at another time or yank the seats and do the interior at some point.

 

thanks, great idea.

 

[QUOTE=thetz99,Jan 21 2005, 01:20 PM]When you are under the car coating the underbody, you can see that there is existing undercoating but it tends to not exist in the transaxle tunnel or the resonator/differential/evap canister area (bare metal on my '01).

 

its probably lighter then you think because its water based and drys.

 

i think they use these on bimmers from the factory.

 

Great find, I may have to order a gallon.

 

Always remember that rubberized undercoatings will retain moisture. Plus your still adding weight to the car. 1 gallon of that stuff probably weighs 15lbs? One small chip on the undercoating and moisture will enter and promote rust.