okay i put a kick ass fosgate system in my car all done by me lol it sounds great other then the ratteling does anyone have this type of problem ? i was going to get some dynomat for it to damper the ratteling does anyone have any suggestions on where to start its raddeling all over in the trunk and where the third brake light is on the celing of the car.

 

i got the same problem i put one layer of dynamat on my trunk lid and it still rattles to hell. i've talked to some installers and they say that they use dynamat and like a layer of carpet or something. i'm guessing the type they use to put on the box. they said that usually works casue of all the plastic shit in the trunk

 

Put something behind your license plate (padding or something to keep it from rattling against the trunk), when I had subs in my Civic Si that's what rattled the most- it helped for me.