Time to do some sound deadening!
Started with removing the interior, cleaned all surfaces.
Applied sound deadening material / closed cell foam on all metal surfaces in the front of the vehicle.
See this wire harness? This can cause noise as it vibrates against the nearby sheet metal, adding a subwoofer adds a lot of vibration within the vehicle, I want to make sure this won’t create noise.
I start with cutting a strip of closed cell foam that is about as long as the section of the wire harness.