REsults of Sound Dampening Material Installation in 2010 V

Very interesting....how heavy is all that stuff? Is is 'stick on' type matting or fluffy type insulation? Dynamat?

 

Tumbler
What was the name of the material? Was it obtained from your dealer or online? It interests me as I have been placing molding in placing stopping wind noise.

Thank you for your time!
Michael

 

50 lbs. is the difference between a large ans small person. i have never seen mpg's compared to personal weight. i bet it's less than 1 mpg.

 

$650 and you have a Lexus...w/ better hybrid mileage. A little sound reduction good, though I'm really not unhappy with the way it is now. As you say an amazing set of compromises...but none really negative. New lexus hybrid be lucky to average 38-40...I'll take the Prius and improve it...like what you've done..and have $10k in the bank!

 

i like it, i may consider this in the near future. i would love my car to be quieter. let us know when you do the rear end and thank you for the write up!

 

I'm doing a partial soundproofing in my '11 but in this case moving from the rear end forward. At this point I've put 1/8" mat in the back area under the spare tire, all the way over to sides of car, up the back, and around the big battery as far as I could reach and slide under. My next step is popping up the rear seat and putting deadener under there. Had to order the hooks for the seat in case of breakage as three dealers in Houston I went to didn't have them in stock.

One can definitely tell there is a noise reduction from the rear. Especially the...um... echoey/resonancey/boomyish sound 'effect' that was coming from the sounds emanating from the rear cargo area. That is pretty much gone. The road noise now seems to be coming from right behind the front seat area, and front wheelwell area more so than just generally from all directions inside the car before I started.

I wasn't able to pull the panels away from the rear wheelwell area, or get the carpet cover off of the big battery, evidently there are some hidden clips or other locking plastics holding the side panels in place that I don't want to break pulling too hard, so I may just shove as much matting up over the rear wheelwell as far as I reach and let it go at that. Finally, looking at some of the pictures other users have posted on what's under the footwell areas in front of each seat it seems there is a fair amount of factory soundproofing and damping there, so I'm probably not going to go that far. I just wanted to hit the large open areas of totally bare metal the most.

 

Pictures?

 

Sound like you did it mostly for music rather than road noise.

 

Just got finished installing sound dampening under the rear seat area and rear wheel wells. I used Damplifier Pro from Second Skin Audio. I had some from an old order which I used in the trunk first, it had silver foil for the backing. The new material was the same thickness and foil but painted black. I put that under the rear seat and over the wheel wells.

I didn't pull the rear side covers over the wheel wells off. There are some fasteners way up in there that I just didn't want to have either pop out and I couldn't get them back in, or break due to pulling/prying incorrectly. I was able to push the material quite a ways up over the wheel well. And there are brackets and such up there that prevents a nice covering of the entire area. The panels on top of the battery cover were on very tight, a small plastic pry bar makes things much easier, especially because the fasteners are attached to the panels well, but not too well. One could easily rip one out of it's mooring just pulling on the panel itself.

I purchased the Prius manual off of eBay for $35 and it was worth every penny regardless of quality. It showed every fastener etc. that I needed to work with, though one has to do a lot of page turning to find a process' where they show how to take stuff off. It isn't in obvious places.

There is generally only one layer in most areas, I didn't want to spend any more money or add more weight. Only in the center of the rear seat area and some of the spare tire well was double layered.

The hardest part was pulling up the back seat. I had to resort to a crowbar as I could not get it out with my hands. But in hindsight as you can see from the picture below jamming sharp metal thingies underneath an area you can't see isn't the smartest thing to do. Luckily I didn't do any damage to the serious electrical cabling or what looks like the top of the gas tank area.

Anyway, I had ordered 4 extra plastic hooks from Toyotapartscenter for the rear seat since it was pretty much guaranteed they would break. I was prepared. Interestingly as tightly seated as the seat was to begin with, putting the hooks on the seat and pushing it back in resulted in it being loose about 1/8" on both sides. I'm not gonna worry about it. The factory probably uses some kind of hydraulic ram to pound the seat in.

It's a pia project with lots of kneeling, stooping, crouching, serious scraping of knuckles on plenty of sharp metal and the foil on the material when you're cutting/placing it.

Drove it immediately after and it is quieter. Again, not a big difference, but over bumps it's more muted. Less high note road noise it seems. If I do anything else sound-wise I'll probably have the doors done some. But that will come later, I'm pretty burnt out doing stuff to the car now. Only the side molding left......or nav....or backup camera mirror......sigh.

 

Good job all, I did the same on my v. Did the front and rear doors, then on to the rear area. Included the spare tire area and I removed the panels from the rear fender area, did as much there as well. Removed the rear hatch door cover and put some in there too. Made a lot of difference. Doors close much better. Only sound now seems to be comming from front wheel area. I may try to do floor pans next. I also used the Ballistic brand, very good quality and about 1/2 the price of Danamat.

 

Anyone had luck with this item called SrapyDeadner