I've finished installing FatMat insulation on the driver, passenger and sliding doors. I also added a layer of closed cell foam on some parts of the doors (where it wouldn't interfere with the mechanical parts or panel).
The installation process was quite easy once you understand how to remove the panels. I didn't have to disconnect any wires on the doors. I simply rested the door panel on the foot rest and secured it with a bungy cord.
I didn't do any sound level testing before or after. Yet, I can confidently say that the noise level is reduced somewhat, and it seems to make for a more comfortable ride.
Here is a photo of the drive door off with the closed cell foam secured with duct tape shown on the top part. FatMat was already sticky'd to that portion of the door.
