I think I've found your problem. You're using the standalone version of Electri-Q, not the posihfopit version. My standalone version is v1.8.9. My posihfopit version v1.0 Only the posihfopit version works with foobar, but you will need a VST wrapper to allow them to interface. My recommendation is this one.
Strange. Just to make sure, you're going into Menu > Presets > Import Preset? Does it change when you select one of the ready made presets from the top of the screen? Also what version of electri-q do you have? It says in the About screen.
Yeah the Electri-Q one should work better. Pretty obvious since you only get a limited number of bars to work with on foobar's default EQ. When you say it changes nothing, do you mean the sound doesn't change or the graphic doesn't change?
Depends on the phone really, but yeah it can sound good out of a phone. Out of my phone however, an HTC Desire HD, it sounds terrible. Congested, muddy bass, poor volume levels, blurry treble. Much better with a dedicated amp.