Sustain is now somwhat of endless - if you like this. For me it implies, that i have to do more muting. The sound is a lot more punchier (great für punk) whith a better attack. Because of the reason i made the replacement of bridge, pickups and strings (erny balls super slinky) in one place, i cannot say, which part is responsible for the change in character. I realized, that the loudness of D and G strings seems a bit lower. Maybe i have to adjust the pickups a bit. Yes, i installed the pickups myself. But this is no great deal if you are a little experienced whith a soldering iron. On my P bass there are only two wires to connect.