I gave an accurate response to the question being asked. He stated the EFI fuse keeps blowing. It keeps blowing because it is overheated.
Why is it overheating? Obviously there is an issue with excessive current traveling through the fuse more then likely from a short to ground. However the OP did nothing to help us in diagnosing or offering advice to him on what could be causing this condition. Sure you can say to check the O2 wires and see if they are shorting out. But how do you know, that he knows how to even check if the wires are shorted.
Simple information can go a long way in helping to get a far better response from me. Does the fuse blow in the KO/EO, KE/ER, the second the fuse is put in? Its simple, basic information that will help get a much better answer. It goes right along with "Whats the right size turbo for my car"...Im gonna tell you "A Big one...The biggest one you can find"