Its possible that air is being sucked in past the tape. Get the intake fixed and then see if it throws the codes.
Your lean codes are 100% from an air leak. Just replace it with something other than tape for sake of your engine. This is a Ford not a Chevy..duct tape doesn't belong here.
Alright. I will wait till Friday and put it back on for one more time. And see. If I get another lean code. I'm done no questions asked. Sent from my iSmarty 4