Also if you don't take care of the I/C problem it doesn't matter what mods you have on the car it will definitely be slower than stock once it warms up.

As a rule of thumb BEFORE doing ANY mods to a car you should make sure your care is properly tuned, otherwise you are left to a lot of guessing with trouble shooting.

find the short/cause of the pump blowing the fuse - a wiring diagram would help and a good volt meter.