Im INFJ in MBTI and an Ni-EIE in socionics. I find that MBTI INFJs are often socionics EIEs, EIIs, or IEIs, but not IEEs.
I hesitate alot when it comes to deciding whether Im EIE or IEI though, but Im pretty sure EIE fits better. IEIs I know are girly, mawkish and overly meldodramtic, and seem to hate any expression of anything opposite of that in themselves since they have Te polr. Te doesnt bother me, but Si does, I cant stand talking about health, the body, nutrition etc, whereas IEIs dont seem to mind. So I say I have Si and not Te polr. Also take a look at the sixth (Hidden agenda) function. EIEs have Se, and IEIs have Ti. The Hidden Agenda(HA) manifests itself as desperate and pathetic in the eyes of others. I do not come pathetic in my need to have approval of my intellectual capacities(Ti), Id say I have more to prove to others in terms of my power, authority, success, status, appearance etc.