Ok so I recently put 2xP3 12 in the trunk. They were working great for couple of days but then next day alot of rattle So I am thinking of dynamating the rear console by removing seats and all that. Will that help? And while at it should I just remove the stock sub or leave it in there?

 

To find the source of the rattle I put the volume up high enough to produce the rattle. Try to pin point the general area of the rattle, then put you palm firmly on any and all surfaces in that area, when the rattle stops, you've pinpointed to source. I can get a lot more mileage out of the dynamat by using small squares on all the problem areas. I've found you don't need to have a solid sheet to get great results. It will save you a lot of money.