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I didn't use any damping material on my door panels as it didn't seem necessary considering there was only a 4" driver on there. Do you think it actually helped? I already used up my supply of RAAmat so it wouldn't make sense for me to buy another roll just for that but I'm curious to know if you noticed a difference.
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09 E90 M3 - Interlagos Blue / Black Novillo / Sycamore Anthracite / Eibach / HRE
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