I don't think you can edit a post after a certian amount of time.
as for your AFM (the proper name for it)
I don't have a cover on it. AIR won't hurt it, but WATER will. it'll corrode the contacts and screw it up. and since you're in Washington, I suggest you do seal it up (I'm in AZ, corrosion doesn't exist >_>)
get yourself a 9v battery and an injector plug, and see if you hear the injectors clicking. if you hear a click when you plug your battery in, it's opening. I would change your fuel filter too. Also, take the hose off the input for your fuel pump, and clean the screen out. (it doesn't hurt to put a Fram G3 filter in there too, incase you have a dirty tank like I do)
change out your main fuel filter if you haven't already.