problem staying running

[ice793]

went to start my bike today and she backfired through the throttle body let it sit a couple seconds fired her up but now the idle is erratic it goes up and down almost like a vacuum leak has occured and i had to keep the idle high so it wouldnt die on me and it would sputter everynow and then through the throttle body any suggestions. i have v&h with the thunder air kit and a pc3 i thought maybe the map got erased but its still there. also smells like its running lean.