Dynamat Extreme installation finally competed

Sorry about my last post, but what I wanted to ask is if anyone here could point me to some instructions/diagrams on how to remove the door panels and the flooring.

I also am interested in adding some soundproofing to my 05Prius and am seriously thinking about the B-Quiet ultimate material.

Mods to date:
Clear Bra-self install
Side moulding
Astrodon back up sensor

 

Hi Daisy,

With regards to removing the door panel, here's a couple of threads that explains how and caveats:

http://www.priuschat.com/forums/removing-d...light=door+trim

http://www.priuschat.com/forums/thoughts-f...light=door+trim

http://www.priuschat.com/forums/passenger-...light=door+trim

Placing the dynamat in the doors is pretty easy.

I think that once you pull the doors apart, you'll feel pretty comfortable pulling the carpet out of the interior. Most of the interior trim just snaps into place.. So, it's just a matter of pulling these pieces out, including those to get at the bolts that hold the seats in place, and lifting the carpet out afterwards.

Have fun,

 

I have ordered the B-quiet ultimate material, and will plan to do the installation in the door panels to start. Will consider the floor later.

A few questions before the installation:

Leave the window up or window down (have tint already installed and do not want to scratch it)?

Am I correct that the sound dampening material goes in place of the vapor barrier? Or should you apply it directly over the plastic vapor barrier without removing it? The link to Spydermagazine.com had the plastic being removed except for the black gasket material.

The B-quiet site states a double layer of their material gives 3 times the effect of a single layer. Wonder how much this would help in the doors? Or is there not enough room for a double layer?

 

Leave the window up.

In place of, though you might still want to put the VB on top of the deadener.

Not sure of the room, as I haven't ordered mine yet. But another thing to consider is putting a layer of deadener on the outer door skin. This can be extremely difficult, however, as you have to cut it into pieces that will fit through the holes in the inner door skin (often it is easier to drill out the rivets on the speaker panel, use that hole, then rivet the speaker back in when done), and overlap each strip. Most people don't use this method because of what a PITA it is.

I would recommend trying one layer, checking the door panel fit, and then decide if you think a 2nd layer would fit.

 

Just had Cartoys install Dynamat Extreme

My first posting on this forum.

I had all doors, floors and trunk done, including the firewall at the front of the Prius. The roof lining was not removed, I have the curtain airbags and did not want to mess with it. It took them a full day to do this. The Dynamat went down into the spare wheel well (spare wheel was taken out to do this!). At the same time, I had my Sub Woof and amp from my RSX put back in. The amp was mounted under the drivers seat so only the speaker cable appears in the trunk. Handy for removing incase of visits to Home Depot.

Was it worth it? Not really and I would not recommend spending the money on doing this. The only difference is that the road noise from the doors is certainly less intrusive. I would not bother with anything else. The installation of the amp was worth it, although my 12" JL sub is a little bit too much for the Prius. It shakes the car and panels too much plus you cannot see out of the rear view mirror when it is on - that is how much is shakes. I may get a smaller non power Bazooka tube for the amp and sell the JL.

As far as noise goes, my new Prius came with the tyre pressure at 48 PSI! I am going to drop it down to 42 to see what happens.

Sorry I do not have pictures.

Pumping up the volume!

 

I think Tempus mentioned that Toyota now has low-noise laminates on the windshields. I have an 05 Prius, purchased in November 04. Does anyone know when these new "low-noise laminates" were installed?

 

Re: Just had Cartoys install Dynamat Extreme

This has been my findings as well. Doing the doors is where the majority of my sound reduction came from. The floorboard in the Prius is already pretty well damped and if it wasn't for the fact that I had the material to do it with, I would have left it alone.

Thanks!!

Brian
BT Tech


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Wait a second... when I installed my sound dampener (eDead V1 SE), I cut it up in little pieces and put it on the inside of the door frame (e.g. behind the vapor barrier). Are you saying I could have just put it on the outside of the door frame (right between the metal and the molding/cover that you remove to get at the door frame)? That sounds a lot easier, and like it would be easier to get 100% coverage as well.

 

For deadening the inner door skin we use a spray product. Dynamat, Cascade and others make it. Very easy to apply and waterproof when dry. Always apply the material spray or mat to the metal surface and clean it before installing. Avoid any product containing asphalt, it will stink for months!

 

This seems to be a very old thread but I wanted to add my results and opinions to it.

After reading a lot and looking at the sound deadner comparison found in this thread I decided to put Dynamat Extreme or Second Skin Damplifier Pro in my Prius to help with the road noise.

I have a 2006 with 130K miles Package #7 and do not have any upgraded stereo components. Running on Michelin Harmonies, great tire, at 38 PSI. Road noise isn't terrible but was getting worse with Ema's age.

I have used and trust Freeman Car Stereo for other audio projects on other vehicles so went to them. They use and recommend Dynamat Extreme so I decided to go with that one since they would be the one installing it, figured might as well let them work with their stuff since I didn't really have a preference.

We ordered a "Bulk Pack" which is 36 square feet to do the doors, floor and trunk area. I didn't want to do the headliner because I honestly didn't think it would help that much and it sounded like a lot of extra work for them so I wanted to start here and add more later if needed.

They had the car for a day to do the install and the total cost with the bulk pack and labor was a little over $500. The road noise is significantly less and is most noticeable by people on the other end of my phone calls over the Bluetooth. That was my major reason for doing it because I would often hear "Are your windows down? It is really loud." from the people on the other end of the conversation. The stereo, radio, DICE, etc... are all noticeable better but to say it is "Wow!!" better wouldn't be accurate. The Mark Levinson and Lexus combo blows it away but comparing them IS NOT FAIR considering that combo in the Lexus pretty much makes everything look bad, IMO.

All in all although I have only had the car back for a few days it was well worth the $500 and we plan on doing the same thing to my fiancee's 2007 Touring. Since it is already noticeable more quiet than my car it should make hers even better. Of course that could be because she has less than 30K on hers and the touring suspension helps I think.

One thing the guys at Freeman suggested doing was getting some spray in sound deadener such as "Mr. Gasket 11030" to spray in the wheel wells. Since this is where it sounds like most of the noise comes from now after the Dynamat Extreme install I went ahead and ordered a couple cans to try. I will post again after I have added this to let you know if it does enough to justify the $20/can price.

That's my $0.02 for everyone out there, I hope it helps someone. Enjoy your Prii!!!!!!

 

I've had really good luck with fatmat:

www.fatmat.com

. . .cheaper and comparable to dynamat, etc. . .

I also recommend spraying inner fender wells with undercoating material. The autozone stuff works well but stays stickey for a long time which I don't like.

 

Ok, I sprayed my wheel wells with GMuff Sound Deadening spray from Summit Racing over the weekend to augment my Dynamat install and it seems to have cut down some more of the road noise.

They used about 2.5 cans of the stuff at the shop that did it. I had Ema in to have the BT Skid Plate installed and had them spray the wheel wells at the same time. All that stuff is easier to do from a lift rather than a pair of ramps and for $80, worth it in my opinion.

I still think I will try and get her a little more quiet and will probably have another bulk pack of Dynamat installed by Freeman. They can go back and do the inner walls of the doors and double up on the floor after getting any spots that were missed with the first bulk pack.

At least Ema is now as quiet if not a little bit better than Myrtle, my fiancee's Touring Prius.

Again this is just my $.02 on the subject so take it as that, no claims at being an expert.

Happy driving!!!!

Chris

 

Ok, another and final update to my Dynamat experience.

I had a second Bulk Pack (36 square feet) of Dynamat Extreme installed in Ema a few weeks ago and it has made more of the "Wow" difference. She is significantly more quiet than before and I would say even more quiet than my wife's (married since last post, LOL) touring edition. Which is saying something conisdering Myrtle has 110,000 fewer miles on her than Ema does.

All in all I will admit that this mod isn't for everyone and can be a bit expensive but at around $1,000 totally worth it in my opinion. When you spend as much time driving as I do all the little mods you can do to make the expereince more pleasant are worth it.

The only place I could possibly add Dynamat Extreme now would be the headliner, which may get done some day but not anytime soon.

Thanks again for all the great information available here on PriusChat. I hope my $0.02 can be as helpful to someone else someday.

Chris