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  1. Cheaply and effectively sound deadening your 2010-2013 Mazda3

    2010-13 Mazdaspeed 3 Appearance & Interior
    So the Mazda3 is noisy, right? And I wanted to make my 2012 sedan quieter, right?! So I bought all the materials I needed to improve audio quality by killing panel resonance and reducing the intrusive road noise! Most garden-variety human beings wouldn't dare tear apart their car, but we're...