Pointless? It works. You sound like my roommate who swore up and down it was stupid. I did the same as the OP and my car is definitely quieter. I'm sure MLV is better for this application but that does not mean deadening is pointless.

 

All deadening isn't pointless. Used as in the original post, it is. Asphalt-based products are even more silly. This isn't just conjecture stemming from the mind of yours truly. These measures have been tested and refined for years on end. It's not an arbitrary concept.

 

FJF,

So I found this Dynapad stuff on the Dynamat website, it says it is for high performance exhaust noises and car audio installations? Any opinion or experience? Since the EVO tends to be inherently loud do you think it would make an impact?

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Dynapad, in essence, is MLV faced with (Ensolite-like) foam. It will quiet the car some, if installed with with no gaps.

 

nice job on the dynamat sorry that it wasnt ment to drown out noise but to you im sure it got the job done so yeah and FJF thanks for the info

 

to each its own BUT there is a reason why evo doesnt have the sound deadening and its so loud cause its an EVO its built for a purpose and thats to perform. There is a reason why it doesnt have 60lbs worth of noise reduction foam, or for that matter why it has a cheap lite interior. Dont forget guys you bought a car that was build and put together by engineeries so its as light as it can be..

 

Let's not have the content of the thread ruin a stream of consciousness rant.

 

Get a db meter from Radioshack, or when your using the deadening material use the rap test to see how the panel resonates.

 

Looks very nice. I did mine with Hush mat or something like that a few months back, same as you, everything out, etc. It made a difference. I would have gone the Dynamat route but no one in the area had a large box of it and I got the Hush mat on sale.

It still made a huge difference though.

 

...read the whole thread.

 

To make for a more productive discussion, let's take a quick look at some pics that were recently posted on General:

https://www.evolutionm.net/forums/ev...ount-pics.html

The OP mentions a desire for a quieter car, as well as plans to enter SQ competitions. What could he have done differently?

1. As we know, covering the interior of a vehicle with deadening isn't very efficient or necessary in the least. As deadening dampens panel resonances, a 1'x1' sheet of Butyl-based constrained dampening material - SDS, SS, RAAMmat - placed in the center of a panel like a door skin is enough. In the pics link'd above, the roof (for example) could have been handled with ~2ft2 of material. For a quieter car, MLV should have been used, instead, installed as link'd earlier in the thread.

2. Covering the pillars with deadening does nothing. They are some of the most rigid parts of the car, as are the spare tire well, strut towers, and a multitude of reinforcements.

3. The OP did a great job sealing the doors. Combines with treated door cards, this can definitely make for a much better-sounding, rattle-free system.

4. While the deadening on the rear shelf can stop the metal from vibrating, installing speakers in the rear deck is the antithesis of SQ.

 

I did read the thread. To me, the sound material made a difference in road noise and vibrations felt from the exhaust during WOT and during highway cruise. I am not sure why that is, or if it is a direct effect from where the material was placed, but it made a NOTICEABLE difference. You can post whatever link you feel, but it made a difference in my car. Not sure about the OP but from the sound of it, it helped reduce road noise.

 

<grin> Amazing. Where do you think automotive deadening came from, and how do think its application was developed? Deadening can reduce road noise, albeit slightly, by controlling panel resonance, but one certainly doesn't have to line the car with the material. It's not sound insulation. If you'd read the thread, as you claim, how does the install look "very nice?" C'mon.

Edit: FWIW, Hushmat claimed that some of its products were Butyl-based. AFAIK, only their tape is Butyl-based (essentially the same thing as can be bought at Autozone). I recall the multi-page threads featuring Fatmat and the droves of individuals who plastered it all over their cars. Of course, they all claimed to witness a positive difference, without knowing that the asphalt-based product is almost totally useless. I say almost, because it can have some beneficial effects via mass-loading, but not the kind sought by the users. Then, there's the smell, the awful adhesive, the weight...and it doesn't do much at all, maybe if you squint real hard. To add insult to injury, the same material could have been purchased at Home Depot for a lower price, not that anyone should even consider putting this crap in his car.

My point is simple. Before taking on this kind of project look into the process; do some research. You and your car will be better-off as a result.

 

So FJF, is Dynamat any good? LOL Joking....


I really need to reduce the noise in my car. Since installing my TBE it's become a gigantic rattle-box.

 

Specifically, Dynamat Xtreme is very good. I should have probably mentioned it, along with Cascade Vmax as excellent products.

Do you know where the noise/rattling is coming from? You could kill a lot of it, if you isolate the source. If it's ratting metal that's being exited by the low-frequency energy produced by the exhaust, deadening will help. Perhaps quite a bit. If the interior panels are vibrating/buzzing, deadening can help, as can closed cell foam, depending on the issue.