I wanted to reduce the interior noise on my C5 so I decided to install Dynamat Extreme. I have a stock '98 LS1 with GY runflats. The obvious fix was to replace the tires but I wanted to come at it from a "worst-case" perspective. I decided on Dynamat Extreme because it seemed to have the best reputation. Everyone on the C5 forum talked about how expensive it is but I found the bulk packs (p/n 10455) on eBay for $117.00 each. It took 2 bulk packs so it only cost me $234.00 total to do the whole cargo area, rear wheel wells, wall behind the seat, drive shaft tunnel, and the front flooring area.

I did mine in two phases. I first installed the Dynamat in the cargo area and on the wheelwells. This was pretty effective and resulted in being able to have a conversation at a normal level.

After recovering from doing the cargo area, I resolved that I would do the rest of the floor area to include the wall behind the seats, the drive shaft tunnel, and the floor boards. I stripped out the interior carpet and seats then got started. It took me a few hours but I was able to get it installed without any issues.

The results.......... It made a significant difference!! It's now pretty close to a "normal" car and I'm even able to use my Bluetooth earpiece for my cell phone! Again, this is WITH the GY runflats!!! I can't wait to see how it is when I put the Michellin Pilot Sports on it. I think it will also help with the heat that comes from the drive shaft tunnel. At the end of the day, I would definitely do it again.

Here are some pics of the installation.

http://forums.corvetteforum.com/phot.../ppuser/263122

http://forums.corvetteforum.com/phot.../ppuser/263122

http://forums.corvetteforum.com/phot.../ppuser/263122

 

I just did the cargo area. Too lazy to do the rest. Your pics didnt show up.

 

CURIOUS... DID YOU WEIGH THE DYNOMAT MATERIAL BEFORE INSTALL TO SEE HOW MUCH WEIGHT YOU ADDED TO THE VETTE?

 

Here is my new weight after Dynamat Xtreme and other things.

Weight of new audio install

57 lbs Dynamat 36sq feet X3 - throughout

52 lbs Dynapad X4 - throughout

12 lbs Dynaliner X1 - doors

20 lbs sub elemental designs 12 inch 2 ohm

16 lbs sub box Subthump

20 lbs elemental designs Nine.5 1000 watt amp

20 lbs Boston Acoustics pro60 X 4

19 lbs AVIC Z2, Ipod, Blue Tooth, XM Traffic, wires




216 lbs total

 

I set up links to the pictures.

Actually the weight wasn't that bad. Keep in mind that I only did one layer. The material in each bulk pack weighed 19.8 lbs. (The shipping weight of each is 20.8 lbs) So 19.8 X 2 = 39.6 lbs that was added for everything. Again, I feel like it was well worth it. I may still do the doors but that won't add but about 7 lbs for both doors.

 

yep; the weight would bother me... but that's because I personally was trying to reach a 1/4 mile ET goal.

But for those not stressed about that specific... the sky's the limit on there type of products. If you got results, then you did right

 

That's a great mod!