I used dry ice. came off easily!! except for around the floor plugs. it is like glued on with some brown crap that is almost impossible to get off. so i just left it there oh well. my car aint no show car and it is covered by the floormats so I can hide it. haha

Anyone got any tips to get it off the floor plugs.

And sound wise. taking out all the front sound deadening and carpet etc didn't really make it all that much louder in the cabin. But I have been running with no rear interior for ages now, so i guess i am sort of used it already.