Would it help or hurt spl levels if you sealed the the two vents that are in your trunk, the ones that vent under the rear quarter panels. I have two solobaric 15"s in two 3.5 cubic foot boxes and while they are playing you can hear tons air escaping. I need to know cause Im about to dynamat my trunk and need to know if i should seal it or not. Would it make a significant differance if they are sealed or not.