its unbelievable how much the dynamat improves the car in soo many ways. The car now dosnt have that tinny sound whenever you hit a part of the body. it cuts down any and ALL vibrations that would make noises and ticks, its heavy so makes the ride a little more comfy, it also works at a very very good heat shield, improves the sound system because i covers up all the unnecessary holes in the car (kinda hard to explain but there are alot of holes in the interior or the car). im sure most of yo know the difference it makes when applied to a pice of mettle. i just cant say enough how much it helped out. And i did the WHOLE care by myself and that was kinda a pain and that stuff can have some very shark edges. I used 4 boxes of the stuff and i think each box was 36 square feet but it was wayy worth the money.