There are really only two ways to remove this stuff. One, with a pry bar of some sort. This works, the stuff comes off easily, but there's a lot of it and your hands start to hurt:


The preferred tool--I daresay the tool of champions--is the air chisel...


I highly recommend to anyone that is choosing to do comprehensive sound deadening that you remove all this factory crap. Not doing so prevents the butyl deadening material from making direct contact with the sheetmetal and absorbing the vibrations it was designed to absorb. When you're done, get out the shop vac and vacuum up all the pieces (they're heavy and plentiful!!). Then get ready for the daunting task of applying the material.




All the Raammat finally applied (used a little leftover Dynamat Extreme left over from a previous job):