Wrapped the sub and it does make a noticeable difference. I can live with the output of it now. Also got my E-Click installed and everyone is right, hardest part is getting through the rubber grommet. Pretty amazing what the factory live valve system is actually capable of.
Couple things;
1. Did you only wrap the front of the box?
2. Fawk yeah the rubber grommet was the worst part! Absolutely ludicrous trying to get the plugs through.