Just did the sound insulation mod (thanks to Mike Mercury for his excellent write-up). Used Frost King Insulation, followed by B-Quiet extreme. I covered the entire rear hatch area, as well as the waterfall behind the seats with frost king. I then did the waterfall, rear wheel wells, back wall, and front area of the rear hatch with b-quiet (I did not use b-quiet in the storage bins.)

I have B&B Bullets and B&B headers on the car (2002 coupe). I noticed a great reduction in road noise, as well as interior resonance. The exhaust still sounds just as loud, but the reverberations are not as bad, if that makes any sense. Definately a worthwhile mod. I did not do the front floorboards or seat area, and I can now notice the road noise more from that area. I will tackle that later, as I am very sick this weekend and wanted to rest the rest of the day.

The procedure was very easy, even for a clutz like me. I only needed my brothers help for 10 minutes when reinstalling all the trim/carpeting, which was a bit of a pain, but probably would have been easier if I had taken more care/precision when cutting/installing the insulation.

Definately a worthwhile mod for those with loud exhaust setups. The car is still loud and sounds great when I get on it, but any potential headaches are gone because of the reduction in resonance.

Next up, testing my luck and getting rid of the cats. I hope the reduction in noise will be enough to offset this move and at least keep noise levels to where they were prior to installing the insulation.

 

Here's the link to Mike Mercury's homepage with the frost-king install.

http://mikemercury.home.att.net/

In addition, you can google "b-quiet" to find sellers of that material. It is much like dynamat, except far more reasonably priced. I wanted to use both type of materials to try and cancel out as many sound waves/reverberations as possible.

 

Glad it worked well for you. I've been hearing a lot of great reviews about the B-Quite product.

 

I also did the frost king mod with 3 boxes of Dynomat Extreme (One in the back and two in the front - most behind the seats) I was very pleased with the results. I did the rear section first and it made the most noticeable difference. I did the front section a month later along with removing the rear fender liners and using more frost king with fiberglass insulation (as Mike Mercury outlined) and this also helped quite a bit. The large hump behind the seats was like a drum before but now with Dynomatt Extreme and TWO layers of frost king it is much improved and I got ride of all the excessive cabin heat from the center console area and floor pan. It was a worth while mod. Thanks Mike Mercury for such a good write-up.

 

I was thinking about gutting the interior and spraying in the quiet car when it gets a little warmer and drier here in houston. Anyone have any experience with this? Mcmaster Carr also sells some vibration dampener (p/n 9545T3) that is a lot cheaper; I wonder how similar it is?

 

How much of the B-quiet material did you use on the total insulation?

Thanks,

Sully

 

It just kills me when you guys put aftermarket exhaust on the car to make it noisier, then spend more money trying to make it quiet again. If you can't stand the noise inside, why do you think everybody else should tolerate it outside? jmho

 

ROBVUK - My corsa pros are very quiet at cruising speed it was just everything else that making noise. I love how my exhaust sounds at WOT and I can still enjoy it even with all my insulation. For me it is not about keeping the exhaust noise out. I just think it sound like a better quality car when you don’t hear extra wind noise + tires + squeaks/rattles from every crevasse of the car. Plus I just had to do a few mods after we purchased the ‘06 BMW (much quieter and handled as well as the vette – at least on the street) but that was before I installed the Z06 sway bars and Bilstein shocks.

One of the main reasons I installed the insulation was to keep all of the heat out of my car. The back section (esp. in the compartments) was very hot on long trips. It use to cooking her makeup bag and my contacts. Now it’s more normal - warm but not hot to the touch. Not to mention the added benefit (esp. for a black car like mine) of the air conditioning not working as hard (cools off quicker) on the 98+ degree days here in Arkansas!

To each his own – What I don’t understand is the open exhaust I hear running around town. That would get so old on long trips. I like to listen to the radio and occasionally the old lady “talking”.

Bottom line – do what you want to your car that you think/feel is best and ENJOY.

 

I understand those who want to quiet down the road noise and I agree that it's a great mod for improving the overall feel of quality in the car. It's the ones that have the loudest pipes they can buy and then complain about the "drone" that I don't get. But in the end I guess there are a lot of things people do that don't make sense. Besides, all that noise is against the law.

 

I love the noise inside, and as I said the actual sound level of the exhaust remains unchanged. I don't love the resonation and vibration at certain engine speeds, which is only experienced inside the car. So what I did makes perfect sense because I now have the perfect exhaust setup and the best of both worlds. ---------- To each his own.

 

I purchased the large roll ($120ish I think?) and used about half of it, but I have yet to do the front floor boards/transmission tunnel area. But I doubt that will use all the rest.