Digital BW, The Print

Hi all-

I've been printing with mis fs-n inks in an epson 1160 via the piezo
driver. I have been happy with the results and simplicity thus far but
would like deeper blacks - I was thinking of replacing my black ink with
the gen 4 enhanced black. Would I be able to replace the black and still
continue using the piezo plug-in and cone profiles or would I have to
use a tweaked workflow? Second, I have a niagra cis system - could I
just clamp the tubing, dump my fs-n black ink and replace it with the
gen 4 ink?

Thanks

Mike Bragg