Heavy, increased SQ tremendously
Got the 40 sq. feet kit, lined my front and rear doors, spare tire well, and rear hatch and had a sheet and a half left over which I gave to a friend. Made my doors and hatch way more solid, they close with a thud now, probably added 50 pounds of weight overall. Road noise is down, my loud exhaust is quieter, but most importantly, my sound quality has gotten even better. It was very good before, but now, I'd rate it as great. I can hear every note and inflection at highway speeds, and midrange frequencies sound so much better. One word of warning, use gloves if installing on a hot day, since the backing of the butyl gets soft and is like tar. Overall, I started with their Q1-1200d monoblock to push an SA-12, their Q4-120 to run polk DB's front and rear, and now the Q-mat to round it out and I can't turn my system past a certain point because my eyes will bleed, but it still sounds crisp and clear with no distortion. SQ products kick ass.
Reviewed by: (Verified Buyer) Nick Savage from Jenks, OK.