can the Duncan Blackouts be mod with the same 18v mod as the EMG's and if so does it make a difference life it does with EMG's.
They can, not sure if it makes a difference, sure it would tho.

-Jackson DXMG (SH-2N, SH-6)
-Schecter Hellraiser C1 (18v)
-Ibanez XPT707FX (Blackouts)
-Ibanez BTB 400 Bass

Main Amp: Mesa DR Roadster


has anyone tried to do this wtih them and does it sound better
I haven't heard of it being done.
I'm not going to try it because I don't have any space in my control cavity of my Explorer for another battery.
Epiphone Les Paul goldtop (EMG 81/85)
Epiphone Les Paul Custom
Fender Telecaster MIM
Epiphone SG Special
Jay Turser JT200 Serpent (GFS Crunchy Rails/Crunchy Pat)
Dean V-Coustic
Ovation Celebrity
Bugera 333-212
Crate Blue Voodoo 120H
apparently its not recommended as the blackouts are designed for that voltage. also its not supposed to make the difference it does on EMGs