Cabin noise

rebe945

Its hard to say which product is better since we only use what we use and not the other options. I used an insulator for ductwork bought at Lowes called Frost King. Looks just like Dynamat and a bit thicker. Hard to say since i never used Dynamat.

Bonzo

Only way to really tell would be hard. Since there are several ways to do this (lets just say 5 for this discussion, but there are many more), you would need 5 of the same car, all installed by the same guy using the same amounts of material, then driven and tested over the same roads under like conditions, and probably using a sound level meter to be scientific about it. Otherwise it's all just opinions and hear say. Installers might be able to give the best options, but their experiences can be flawed. Using Dynamat in a big custom van may make a huge difference, but using Q-Quiet in a Camaro might not make as much difference. And even if the installer did do 2 Z's, it would probably be weeks or months apart, and memories aren't always clear with this.

My recommendation after going through all the pain to do it would be not to skimp if you can afford it. Do some research on your own, pick a brand that seems to have a good product, and if they have different options, like thick = $, thicker = $$ & thickest = $$$. Go with the $$$ thickest of that brand and be done with it.

Dynamat has the name, but there are others that are the very similar if not exactly the same, and possibly even better. I chose FatMat because it offered the same sort of product at a cheaper price. If I had to do over I would have bought the better level material though. I just got the regular FatMat, but they make 2 other better ones. My mistake. But if you are considering FatMat, don't use Amazon or the like, because it will cost more. Go direct to FatMat and shipping is free. Also, do NOT buy the trunk kit. #1 it won't be enough, and #2, it's priced higher. If you want to do the entire trunk area, buy the 50 sq ft Bulk package, it's the best deal.

Cheers --- Bonzo

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waterbull

Evil Sports

I spent less than $40 on the Frost King stuff thanks to rebe945, worked well.

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scottIN

I hope Frost King is stable. Had a buddy that used homeowner stuff in his RX7. When it got hot it (a) melted, and (b) smelled like hell. He took his whole interior out to try to scrape the goo out. After days of scraping and cleaning with acetone, the car still reeked of hot tar until the day he sold it. It had dripped down into every nook & cranny.

Frost King may be ok, but just a word of warning to those who use stuff not designed to withstand the heat that a car interior can generate.

'10Anamoly

I just finished up putting Dynamat Extreme in the hatch floor, wheel wells, back wall of the hatch, forward section of the rear wheel wells behind the seats, and most places in between. I also coated the doors and around the speakers there. Note that, as mentioned, you do NOT need 100% coverage. I used strips of it cut to fit the areas. I kept a soft mallet to test for vibration and solidity of the parts after application. You can clearly hear the tone change even with a small amount of Dynamat Extreme applied to an area. I also put some on the heat shield over the rear muffler area. Since my custom exhaust with no mufflers does not get that area very hot any more, it stopped that rattle from the loud exhaust completely.

The sound change overall with just Dynamat in some key areas was significant and well worth the effort. I spent the whole Saturday doing it (not an easy job) and cleaned up before my wife got home. When she got home, I took her for a ride as an objective opinion (without telling her what I did).

It was not more than five minutes in the car and she flat out asked what changed on the car because it was so much quieter and more relaxing inside. I proceeded to explain..

Cost was $142 (price match at Best Buy to Amazon.com prices for three door kits of Dynamat Extreme). I have two sheets of Luxury Liner Pro being delivered today to cover the hatch floor and rear wheel wells. It will be here today so I can report on the additional refinement. Total weight added so far is 15 lbs on the dot. Another 20lbs for the LLP and that will be more than sufficient for my needs. It is already very nice now inside, but I want the CCF and MLV barrier in the back for future exhaust mods to avoid too much drone getting into the cabin.

In addition, after I finished surrounding the door frame and the speaker bracket itself too with the Dynamat Extreme, it nearly doubled the bass output from the Polk 6-1/2" speakers. Sounds like I have a small sub in the car and was worth every penny. I cant turn the volume up anywhere near as loud now and its crisp and clean sounding. Imaging is fantastic.

Last but not least, I covered the rear air vents (near the wheel wells) with Dynamat too. Since the windows open a bit when you get in and out of the car, they were not doing much for air exchange. That alone killed a lot of tire noise and some exhaust fumes from the back.

More to come soon. My opinion is that adding 35 lbs in return for more of a GT-style refined ride is 100% worth it. The car handles identically to before, but the exhaust and engine purrs are so nice now and the road harshness is down about 50% already, pre Luxury Liner Pro addition.

Just my $0.02

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RiCharlie

Nice to hear..what i like is that you can now hear the engine more and it's a LOT more pleasant on long drives..I dont think I have ever read a professional review that did not mention extreme road noise as a major problem..It still sounds like a sports car..not a cement mixer..
Same experience with my wife...
With this many complaints you would think Nissan would do something about it...
Nice to hear of your success..

waterbull

thank i will try that this weekend