Originally Posted by sallon /forum/post/0
I just recently installed a system into my car and I've run into a major problem with my trunk rattling. The rattling is so loud it's distorting the sound even inside the car. I've been told that DynaMat is a good solution to this problem, but my local stereo shop told me that the price, including installation, would be $250-300, which is crazy.
I have two questions: (1) Is DynaMat really the best solution, or can I get something cheaper? (2) If DynaMat is the best solution, how complicated would a personal installation be? Are there any guides out there someone could point me to for installation? I have a '98 Corolla if installation is model-specific.
"Boom, Boom, Buzzzzz"
There is nothing cooler then the sweet sound of sheet metal vibrating, am I right?
Anyway, DynaMat can help but it may not be the best solution. In my experiance, it is best used either a) in large quantities, or b) in specific locations.
I would first try finding exaclty what is vibrating. Is it the lid of the trunk (if so is it the top or bottom pannel), the licence plate, the latch, the spare tire, the side wall, etc. If you find it to be something simple, like the licence plate, you may be able to solve the problem yourself. Just crank up the tunes and listen. Touch everywhere to find the vibration and stop it. If the problem is localized, try cotton stuffing (if in a confined area) or a small piece of DynaMat on that area.
For example: I decided to DynaMat most of my car. After finishing the entier rear liftgate (SUV) there was still a buzz. We disassembled the whole thing and applied Dynamat to the inside and outside pannels. But it still buzzed. It turned out to be the handle to open the door. We disassembled it, changed the weather stripping and it was fine. But I degress.
The price is probably right. Most of it is labour. there may be about $100 of product in that but it does take a long time. They will have to remove all of the carpet and possibly subwoofers, clean all of the surfaces with solvent, apply, and re carpet to make it look like they were never there. The application is the longest as it involves a hard roller and some sore fingers. There are also two kinds of DynaMat, Extreame (with silver face) that will self stick (faster), and regular (black face) that will need a heat gun to be installed (slower).
The Dynamat should come with some very basic instructions. The hardest part will be taking the car apart and putting it back together. The application will take time a patients.
Remember Dynamat is a brand like Kleenex. There is also Brown Bread, EDead, and peel and seal. The DynaMat is probably the best, but the cheap ones could be used in two layers.
here is a good "How to" video http://www.crutchfieldadvisor.com/IS...mat_movie.html
Hope that helps.