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Dynamat?

 
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Old 01-05-2008, 09:35 PM
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Dynamat?

I want to make my car quieter and so I was wondering what everyone's opinion was on it. Where specifically should I put, which style of Dynamat should I use?

The biggest annoyance for me is the sound of the suspension when hitting pot holes, as well as the exhaust, though it doesn't bother me nearly as much.

I do have a little bit of a concern as to how much it weighs but since I plan on getting some cf components in the future I'm not too worried about it.

Has anyone tried the dynamat for under the hood? It would be nice to only hear or at least mostly hear the sound of the exhaust from the out side.
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Old 01-06-2008, 10:30 AM
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I had a roll of Dynamat given to me as a gift.
I never used it as that sht is heavy!

The trunk is a good place to use Dynamat because it's hardly insulated. Dont put it under the hood, i dont think the mat will hold under high temps like that...
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Old 01-06-2008, 10:44 AM
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i have dynamat in my trunk, under the rear bumper - behind my number plates, under arches and so on.. I used dynamat extreme which is the more thicker one..

it makes one hell of a noticeable difference in sound proofing..ill see if i can get some pics up for you..but if your gonna do it.. make sure u line the entire trunk with it..clean it first with surgical spirit and then wipe it down with a wet cloth afterwards otherwise the dynamat wont stick. take all the carpeting out including the spare wheel and get some dynamat under there too. and dont worry about weight, u wont even notice the difference.
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Old 01-06-2008, 10:55 AM
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It will hold very well under high temps if you use Dynamat Extreme and give it time to cool after the initial heating. It is really heavy but it reduces road noise significantly. I recommend it. Just get a few ppl to go in with you and buy a huge roll so you get more for your money. You can even weigh it before to see how much you want to put it in if you are concerned with a little extra weight. Realistically, expect about 50 lbs or so.

The install:
Make sure you use a heat gun and NOT a hairdryer. Get like a huge towel or some really thick gloves so you can frimly press the material into all the crevices when you are applying heat. Trust me, that stuff gets HOT. Use a razor blade/boxcutter and apply it semetrically. I recommend removing the back seats and applying it on the rear brace as well as on the inside of the chasis that surrounds the rear strut-towers. Try to keep as much of it inside the car as you can so it doesn't get weathered. As for the exhaust, just apply it to the the INSIDE of the trunk floor and in the spare tire well. you will only need to do one layer if you use Dynamat extreme and expect about 8-10 hours of install time. I recommend doing the back area of the car first before messing with the front struts b/c you may be satisfied before you even get that far.
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Old 01-07-2008, 09:19 PM
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i install stuff on cars at best buy and i had to dynomat an 07 civic si yesterday, i did the entire trunk and i get the point but think for the whole car its just too much and not worth it.
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Old 01-07-2008, 09:59 PM
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^agreed. Bigup Raleigh, NC too
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Quote:
Originally Posted by jimmyznutz View Post
You can NEVER have too many tools.
Quote:
Originally Posted by Brash22 View Post
Custom plates are gay.
Quote:
Originally Posted by Lazer View Post
I try not to hang around people that seem like that, because lets face it you can tell by Oreilys flame decals on their cars from a mile away
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Old 01-10-2008, 07:30 PM
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Do you think it will get rid of a noticeable amount of noise from the exhaust and rear suspension though?
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Old 01-10-2008, 11:03 PM
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ehh its really an all or nothing kind of job, either you do your entire car and get a good result but dont do just random parts or you really wont notice a difference.

however you can target small parts like your licsence plate and big place that you know rattle
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Old 01-11-2008, 12:54 AM
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In reference to my last post, would getting my entire trunk, i.e. the sides and bottom, make a big difference with the exhaust and suspsension?
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Old 01-11-2008, 09:14 AM
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like i said it would make a little difference(without doing the entire car) but the waves of the sound would still resonate through the rest of your frame and body, so essentially youd still hear your exhaust and suspension. maybe not as much but still pretty clearly.

What kind of exhaust do you have?
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Old 01-11-2008, 05:26 PM
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It's a DC, I love the sound of it, it can be a little annoying when driving down the highway.
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Old 01-11-2008, 07:17 PM
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yea i was going to say a stock muffler it would cut down on noise more but its going to be hard with that exhaust, ive heard it on my cousins accord
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Old 01-18-2008, 08:58 PM
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Quote:
Originally Posted by mckillio View Post
It's a DC, I love the sound of it, it can be a little annoying when driving down the highway.
I put over 100 lbs of Dynamat Extreme in my 96' Accord (still looking for the pics) and it made the car drive like it was brand new. Obviously the extra weight wasn't desirable but then again, it had 4 12's pushing 157 Db. It wasn't meant to be fast in the first place.

Anyways the moral of this story is that when the system was removed for maintenance and upgrades or whatever, the Dynamat made the exhaust (Apexi N1) sound freakin phenomenal on the inside of the car. I doubt too many prelude owners are gonna put $300 worth of Dynamat in there car to tone down their exhaust, but I do recommend spend like $75 or go in with a friend for discounts and just put like 25 lbs in the trunk. There is a good chance you will be very satisfied. Just the reduction in road noise is enough to sell me on it.
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I try not to hang around people that seem like that, because lets face it you can tell by Oreilys flame decals on their cars from a mile away
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Old 01-18-2008, 10:34 PM
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just note, if you EVER plan on taking it out, dont put it in...it is a complete and total ***** to remove
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Old 01-24-2008, 11:15 AM
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Its true, once that stuff is in it wont come out....HOWEVER

If the only thing keeping you from doing it is the weight, then get Dynamat extreme. It's made with 1/3 the adhesive and foil. Cut it into 2" squares and use a checkerboard pattern all over your car or the problem areas. It will weigh next to nothing and will make your car scarey silent.
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