Removing sound deadening

[budd]

Just leave it. Your not going to save much weight and i know what your like. You'll do one footwell then leave the next

if you remove it all (from behind the dash etc) you'll be surprised how much it weighs, I got around well over 10kg out of my Impreza the bitumen stuff is very dense and heavy for it's volume if ou want like it's very worthwhile. Removing weight is a free performance gain, there's a point where if you remove enough weight (and I don't just mean the sound deadening everything you don't actually need is deleted) you will begin to feel the benefits you'll feel the car becoming light, it sounds strange but the improvements in dynamics is very noticeable you can actually feel the reduction in mass.
I've always found chipping it off cold better than using heat which makes it sticky
you'll end up with it looking a bit tatty like this

but if you clean off t with thinners and paint it looks a little better

or if you really try a stripped interior can look really nice

but bear in mind that removing all the sound deadening on a road car isn't for the fainthearted the last pic of my old 200SX looks (IMHO) great but this was still mainly a road car and it wasn't the nicest place to be on a long run, the combination of road noise, fixback GRP seats, loud exhaust make cruising on the motorway a very uncomfortable experience.