From whatever inputs I received so far following seems to be the choices for making the interior quiet.
Which one is most effective?
Which one is more easier to install?
Which one is more cost effecive?
How much stuff do you need for an integra

Following seems to be the charges for Extreme dynomat, Hi-temp mastic and Visco elastic
Extreme Dynomat : 4 Sq Ft : $30
Hi-temp mastic : 32" * 54" sheet : $12
Visco elastic : 24" x 54" sheet : $22

 

anybody??

 

Get a roll of Brownbread....same as Dynomat Extreme, fraction of the price.
70ft2 roll = $155
http://www.b-quiet.com/brownbread.html
One roll prettymuch did my whole car, 2 layers in the trunk.

 

Is the weight identical to that of the Dynamat Extreme? Did you happen to weigh your 70 square foot roll?

 

So the Brown Bread is supposed to be between the weight of Dynomat original and extreme. They claim if you use 2 layers it triples the dampening effectiveness, and the cost is 1/4 that of Dynomat Extreme. And remember Dynomat Extreme is quadruple the effectiveness of dynomat original. So...hold on while I grab my riceulator, Dynomat Extreme = $250 for 36ft2 vs $155 for 70ft2 of Brown Bread. Now lets triple the effectiveness of Brown Bread by assuming a double layer, this puts the effective sq footage down to 35ft2...divide that by the cost....and you get $4.40/ft2 vs. the Dynomat Extreme cost of $6.94/ft2. Now multiply that by the derivative of the "effectiveness" ratio. Effectiveness ratio was calculated like this. Dynomat original = 1 Extreme = 4 Brown Bread = 2.5.......Double Layer of Brown Bread = 7.5. Now, assuming diminishing returns on money spent, and a positive correlation between the amount of "deadening material" and times you get laid because your car stereo bumps, divide your cost/Sq ft by your effectiveness ratio, and you will get a value between 2 and 0. 1 = neutral, if you got laid, it probably wasn't because of your system, you just have skills. If 2>x>1 = if you got laid you must have a really nice car, because your system sucks and you spent too much money. If 1>X>0 you could be driving a bucket, but you will still get laid because a bucket with beats drives like a Rolls Royce!

 

That's nice, but how much does it weigh.

 

you forgot to multiply the square root of x times the quantum singularity according to the physics quantum chart x must equal less than z because it comes before z in the alphabet, BUT then again by law of quantum mechanics there is no future and no past and only present and by breaking this law you must go to jail for a minimum of a quantum leap light year

 

You guys need to brush up on your linear algebra and quantum mechanics because you guys have it all wrong!

Anyhow, seriously, I'd recommend this stuff called Raamat. It's 65 dollars for a 50 sq foot roll, weighs about 30 pounds a roll and has an aluminized backing. The stuff is extremely flexible and the adhesive very strong.
http://forum.elitecaraudio.com/showt...threadid=26341

 

why do u guys use this stuff?

 

Duh ? To get laid !

 

It's definately not for performance, but for audio. Alot of times, if you run a very loud audio system, the body panels will resonate with the bass and there will be noise as a result. The matting dampens the panel so that they don't make any sound even when you are pumping alot of bass. The matting dampens road noise, isolates noise and overall gives the car a more refined feel since it feels more solid.

 

This is getting very interesting...

Now somebody tell me how to put this stuff into the car???

1) Remove the seats
2) Remove the door panels
..........??


Steps 1 & 2 are over in my case as my whole interior is removed already!!!!( car's
seat and door panels are stolen from the car)

 

remove seats, door panels, interior carpet and center consoles, when you see the bare metal.....start sweatin' !! Most of these sound deadeners can be applied with their sticky sides and a roller from a hardware store.... but the best, most permanent method is to use a heat gun to make it more pliable and able to conform to your floor/door's shapes.....
eliminate any stray air bubbles with a sharp object and push them down with your fingers....

 

To keep down the noise.

 

Brown Bread weight..... 70ft2 = 30lb or .43lb/ft2

 

Not to scare you but it took me 3-4 days to mat my entire car. 1 day to take everyting out, 1 day to do the front and rear seats. Another day for the trunk lid, trunk floor and 2 doors, and another day to put everything back in. You can do it faster, but it just depends on how through you want to be.

 

How does it compare to stock, noise-wise?

 

The car just feels more solid. It's especially noticble going over train tracks. You get a nice solid thud instead of the more hollow sound you get without the matting. The car idles smoother too since the chassis doesn't vibrate as much. I just put on some koni yellows to replace some blown Illuiminas and with Sportlines, my car doesn't ride that much worse than an Accord.

I will admit though that the car did feel notibly heavier. Not really acceleration wise but in terms of handling. Probally since the weight is distribuated all over the car. The car just feels less raw. People who have driven with a stripped Interior will know what I mean.

A huge benefit is that when the bass hits, there is no rattling anymore.

 

If you have friends that work at Circuit City/Best Buy, etc.. that can get you dealer price on stuff, get the dynomat. They mark up that stuff like CRAZY

 

It's hard for me to compare SQ because I had my dynomat in before I even had my system working. As far as road noise, I cant really tell the difference. I think the key to road noise is doing your floorboard and wheel wells, possibly even your headliner. A good example is your moonroof, huge difference when you have the glass closed and the sun visor open vs. closed. I am tempted to do my hood, notice most nice european cars have some sort of hood liner. I used 80% of my brown bread roll on my trunk (2 layers) all the way to under the back seats and over the wheel wells, and front doors. My trunk is so solid, you allmost cant hear my sub from outside the car, I have one 12in Infinity Perfect, sucking up 400W from a PPI amp, honestly I expected more complaints from my neighbors than I have recieved.

 

how much weight would i add by doing 2 layers of dynamat xtreme on the whole car?

 

Its spread around the car so its not really going to weigh your car down like hell. It helps w/ sound pressure too.

 

Running it through the formulas above... I would say you need around 200ft2 for 2 layers all the way around. I used 70ftsq, and that got me 2 layers in the trunk and one in the front doors. Then you gotta do the whole floor board and headliner, thats probably going to take almost twice as much on top of what I did. Dynomat Extreme is also going to weigh a bit more than the brown bread that I used, lets say 40lbs for 70ft2. Multiply that by three and you got 120lbs of dynomat! I figure if you are that serious about it, weight shouldent be a concern because you must have a couple hundred pounds of subwoofers, enclosures, and amps! Just my single 12in in a big *** sealed box weighs at least 40-50lbs. If you do do that, your car will probably sound like a Lexus inside. That would be a $1500 dynomat job! Daaaaaaaam!

 

I used 100 sq ft for the floor pan, 2 doors, trunk floor and trunk lid. Kinda hard to do the roof because of the sun roof and all the mechanisms assoicated. So yeah, you'll probally need about 200sq ft and it'll probally be a good 80-100 pounds in weight.

I woudln't say that's a 1500 dollar job. I paid 130 for the 100 sq ft of Dynamat Extreme like stuff and I did all the labor myself.

 

yea i'm currently pricing whether or not to use brown bread since you say its lighter. I used xtreme as a reference since i work at Good Guys and get it at dealer cost. Like everyone else here i want my car to sound quieter inside, but i don't want to lose too much performance and handling.