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I just installed the Eastwood sound deadner today on my '11 brembo MT. A Great Big improvement. I am very pleased by the 50% reduction in road noise just from doing the spare tire well and the trunk floor. Their product cuts well with a box cutter and is easy to work with, sticks like crazy, nice and thick. Looks just like the much more expensive Dynamat. Wear gloves, the foil is sharp. The trunk floor sounded like a metal 55 gal tin drum before, now I only get a soft muffled thud when whacked with a knuckle....Was on sale for 99 delivered last week, only used a half a box so far....I am happy
 

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I just installed the Eastwood sound deadner today on my '11 brembo MT. A Great Big improvement. I am very pleased by the 50% reduction in road noise just from doing the spare tire well and the trunk floor. Their product cuts well with a box cutter and is easy to work with, sticks like crazy, nice and thick. Looks just like the much more expensive Dynamat. Wear gloves, the foil is sharp. The trunk floor sounded like a metal 55 gal tin drum before, now I only get a soft muffled thud when whacked with a knuckle....Was on sale for 99 delivered last week, only used a half a box so far....I am happy
I just purchased spray in liner called boom mat?

Boom Mat Spray-On Mustang Vibration Dampener 50220 - Free Shipping!

I am gonna spray my trunk with it hoping for some good results as well! Glad to hear this does clear up a lot of noise.
 

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Yeah it works for sure. I lined my trunk floor and lid with dynamat when I did my sub install and what a difference it made. I plan to do both doors next.
 

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When I did a back seat removal kit on my Mustang, I used the Dynamat stuff. Works, but it's expensive!
 

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I sprayed truck bed liner from NAPA on the inner fenders after removing the plastic liners, then sprayed the trunk area/inner fenders. After it dried, I rolled in Dynamat and the end result was very good. Next is removing the seats/interior carpet to do the same. I can actually feel the vibration of the road with my left foot on the foot rest, so I know there is more to do. Also removed the "sound tube" which was noticable. Just a hint, I also found a cool product that is used to insuluate hot water heaters that I will also be using. It is a double foil product that sandwiches a closed cell styrofoam. The foil isn't as thick as the dynamat, but should still perform the task of turning sound to heat. The beauty is the cost...less than $30 for a big roll that will cover at least two cars.
 

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I sprayed truck bed liner from NAPA on the inner fenders after removing the plastic liners, then sprayed the trunk area/inner fenders. After it dried, I rolled in Dynamat and the end result was very good. Next is removing the seats/interior carpet to do the same. I can actually feel the vibration of the road with my left foot on the foot rest, so I know there is more to do. Also removed the "sound tube" which was noticable. Just a hint, I also found a cool product that is used to insuluate hot water heaters that I will also be using. It is a double foil product that sandwiches a closed cell styrofoam. The foil isn't as thick as the dynamat, but should still perform the task of turning sound to heat. The beauty is the cost...less than $30 for a big roll that will cover at least two cars.
Which bedliner did you use bro? I wanna do my doors and some parts of my truck i couldnt easily get with dynamat
 

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It was a bedliner from Napa, there is only one that is suitable.
It really was a good product, dried quickly and the off-gassing was done in 2 days. There is no risidual odor in the car, love the new car smell!
 
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