Re: naruto's speed & hearing power
Naruto's 5 sense were heighten from the sage mode. With that being said then I believe his speed and hearing were dramatically increased as a result also. Naruto was not that slow to begin with if you look at his battles in the manga. Against Sasuke he looked hella slow because Sasuke is a speed demon. Let me throw out another factor also in regards to Naruto's speed...Maybe it's in his genes to have speed. His father was the 4th hokage after all...