yea i experienced the same thing with my old setup. subs facing in, pushed up to the rear seat opening, and not sealed off was by far the worst orientation as far as cancellation is concerned. when i sealed it off there were very noticeable gains. I feel that sub/port facing in, sealed from trunk is a double whammy because you eliminate the plain ol' ~20ft^3 of extra airspace in the trunk, as well as the unknown/known dynamics of a "tricky trunk" (sources for wave cancellation, leaks to outside the car, wasted sonic energy spent moving the trunk lid, ect.) //content.invisioncic.com/y282845/emoticons/nerd.gif.c6fa51ddf7ff75f1c0371fbc648f70ae.gif
congrats on the loud trunk car