i thought that sometimes for some people it could make the sound better, but from reading the comments here i understand now there is no need for that.Sure, not sure why you'd want to though.
There is some belief (accurate or not) that 2 ways should not be reflex designs (and there are some compelling reasons for it; port resonance leakages tend to dominate in the crossover region). But you gain so much SPL and linear bass extension that I wouldn't consider it worth bothering with, and the 8030 doesn't have any meaningful port leakage.