Horror: “Nothing to do with halloween”,

My first inkjet prints from 4x5 drumscans and D800 are frankly terrible vs Chromira prints.

Lab suggested Epson pigment printer on thick exhibition matte paper.

The results are what I would call “dead dull”, nothing pops as with normal prints, though color gamut is perhaps wider. The images somehow lose luminosity.

Questions: is it possible to get great looking inkjet prints from 4x5 drumscans or should I always default to Chromira prints? And what about print output with digital camera files? 200mb tif files, printed at 360 dpi. On close inspection, details are there but the images lose brightness and punch as compared to my screen. What can be done to maximize image impact from inkjet printers without resorting to over saturation or pushing contrast?