It is a good thing you figured it to just be the fuse. But keep this experience in mind. Replacing the IC pump is quite common, I replaced mine after having the same experience with sluggishness.

I have a SprintBooster. Some will say that it doesn't really do anything but, I like it. I bought it because when I'm headed home from work I exit the interstate and immediately need to get in the left lane to turn, I have to cross 4 lanes. If I don't make it I have to drive two miles down then do a u-turn.
It is a pretty busy road so I often have to shoot into a gap when I see one. Before the SB I would floor it to get across, and nothing happens for a second or so, by the time it kicks in I may have missed the window. Now that I have the SB it moves when I want it to move. Reaction/response is improves significantly.

That is my experience, others may differ.