I was getting an occasional rattle that I narrowed down to the spoiler, so I pulled it off today and deadened everything that could possibly move or vibrate...
Overall, the car is much more quiet on the road than before... With the combination of all sound deadening applications, it's a night and day difference.
It cost me just over $450 for all the materials, and to me, it's a worthwhile upgrade... :)
Started sound deadening the hood a little, this too reduces engine noise in the cab...
I am putting cutouts in the recessed areas and then covering the hole thing with a single piece.
Last, I'll tape the edges with aluminum tape.
I have spent some time doing sound deadening under the dash, against the firewall:
Layers of KnuKonceptz Kno Knoise CLD and Second Skin Luxury Liner Pro CCF/MLV combo. Plus some egg-crate style foam stuffed in the cracks and crevices.
It has made a remarkable difference in reducing the engine...
Moving on to the next phase, and that is adding "rear fill" to the system...
I am either going to put the speakers inside the trunk lid or in the side panels in the trunk, and I'll also need to stash a very small amp back there to power them.
Probably going to go with AudioFrog 4" mids and a...