AzmodonI would advise against putting anything not designed for the hood, on the hood. Most of the stuff I used is butyl rubber, which is really sticky, but when heated can lose some stick and catch fire given the surfaces in the engine bay. I bought 36 sq-ft (3.4m^2) of the stuff and would probably have needed 2 of those to finish the door skins, roof, tunnel etc.
I was able to greatly reduce road noise but the sections that were lacking are the doors and roof. The doors being open to the air with fair sized holes and the only 'sound proofing' they have is the plastic sheet covering the cutouts. While a butyl layer can be added to the inside of the exterior door skin, some type of foam pad (I made the foam aluminum sandwich) cut to shape really helps. Don't forget behind the wheel well liners in the front, where your foot sits - some layers of spray on rubber coating work well.
The biggest issue is, for example, the trunk, peel back enough and you'll find open holes to the outside. I used a layer of rubber, then covered that with... aluminum bubble wrap... homedepot - just sealed air pockets to catch some of the higher pitched stuff. Also if you leave the trucks divider plate in (it won't hurt any bass coming from back there) you can line the bottom of it too.
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Mr micras marvelous 2015Micra
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Originally Posted by MrMicra2015
