Yeah I get a lot of road noise too. Deadening could turn into week long process in itself the way I have it pictured in my mind. I want to rip everything out and do it right to dampen the road noise. I want to recarpet the floor as well. Since I have some of your attention I was thinking I could get away with some carpet from Home Depot or some place like that. Only difference I see in the Home depot stuff is it's softer. Anybody ever try it?
I will most definitely Do a build log when I do. Right now I'm still gathering materials. I've been riding around with no music for like close to a month. you start hearing everything wrong with your car when you do.
If you want to reduce road noise, the firewal and will make a difference. Thing is, it may be tough because with my Accord I would have to pull out the engine, and I'm sure that will be the same for most other vehicles. Or if you can do the firewall from the cabin side, that will help.
What REALLY helped reduce road noise was deadener on the wheel wells and fender. I only used 3 layers of Spectrum and 1 Layer of sludge for the front and 2 or 3 layers of Spectrum for the rear. I wish I would have done a layer or two of Damplifier on the fender.
Doing the wheel wells made a HUGE difference. If you want to take it a step further you can deaden the floor of the vehicle. Wanna take it even further than that? Use luxury liner.
Edit: James Bang used some material from carpet, that yellowish looking stuff for part of his floor. It's the same concept as the Luxury Liner, but probably much more easier on your pockets.
By the way, I didn't do all my deadening all at once. I spread it out because originally it was just the doors, then the trunk, then the rear deck, then I started going crazy with it. I probably put around $600 worth of deadener and it was much well worth it. If you find any small cracks or tough to get places to get to, like pillars, expanding foam is a charm. I used Big Gap Filler. Wal Mart has it and it's cheaper than home depot.
