Need my trunk to rattle less?

Dynamat or other sound insulation. A non-ported subwoofer box, ports allow more air movement, but make the sound more 'sloppy'. You can also turn the gain down, that will reduce the rattles. Oh, and one more thing, get a diesel.

 

I just tightened the clip where the trunk is held down, kind of helped my rattles but they are still there when I turn it up. I remember reading something about a broken trunk seal causing rattles as well, might want to look into that.

 

I dont know if theres much more tht can be done apart from tightening things up