Nissan 370Z Forum - View Single Post

'10Anamoly · 03-16-2012, 12:29 PM

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

03-16-2012, 12:29 PM	#421 (permalink)
'10Anamoly Track Member Join Date: May 2010 Location: GA Posts: 882 Drives: 2010 370Z BS M6 Rep Power: 16	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 __________________ 2013 Ford Mustang GT 374rwhp, 360rwtq SAE / GT500 Axle-Backs / Brembo Pack / Track Pack / Recaros / 6spd Last edited by '10Anamoly; 03-16-2012 at 12:37 PM.