not really ya speed increase if you transform or use aura but not simply based on ya PL i suggested this a while ago but with the huge range of PL you would become truly insanly fast, cus think bout the series when goku was fighting the ginyu force no one could see him but when he was fighting ginyu himself they could in the show the speed you see is only relative to their enemys strength
ohh and i didnt want to creat a thread for this alone but i think theres gettin too many stickys in Newbie Central