Yaris Sedan Deadening and Sound system upgrade

[JimKellyfan]

I was curious as to why not running a huge patch of dynamat or imitation dynamat across areas (covering all but tubes in doors, etc.) ? Instead you had small patches here and there...Curious ?
On another note, (I want to dynamat know my doors for obvious reasons), but before I did, I wanted to let you (and others) that I put two cans of 3M undercoating on my underside (floor pans/ metal parts of wheel wells) with dramatic noise deadening improvement. For an even better coat, let dry and hit with two more cans. (I am just going with 2 for now), until I get my speakers and dynamat and see what that does for it, sound deadening wise.