did you check to see if you pinched or bent the fuel line or tank breath line? very possible being that you changed out your plugs and everything.
This exact same thing happened to my friends 09 gsxr 1000, after we installed his bazzaz unit. We fired it up the bike ran fine and everything was good. Once we had put the tank back on and the bike back together, we had the same issue you are describing. The bike wouldn't start without giving it gas an wouldn't idle. Turns out when we put the tank on a little vacuum line became disconnected, very hard to trouble shoot and took a few hours to find. My suggestion to you (if you haven't done it already) is to pull it all a part and go over every little connection and line in and around where you were working. Let us know how it all plays out.
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