Trunks lose sooo much pressure and the sound cancels itself out, i did a 46 on music with a box tuned to 32 with 4.4k on one 15 with port and subs back. Theres only so much you can do out of a trunk unless you turn the box around and seal it off, which in my case wouldnt work because i have a giant ass gastank between. Thats why i have a wall now lol.