Has anyone used this for noise dampening?

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2015 CX-5 Grand Touring AWD w/ Mazda3 18 rims
Your link wouldn't open for me. However I gotta say that Sonic Electronix NVX brand has some stuff that looks really nice.
 

V8toilet

Member
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2014 CX-5 FWD Touring auto and 2012 Mazda 5 Sport
I've used many but not that one. You don't want to skimp on that product after tearing apart your entire car to apply it. Sound Deadener Dhowdown CLD tiles or second skin Damplifier are the two best I've used. For a lightweight alternative Sonic Barrier lightweight vinyl, part number 268-035 from parts express.