Ee traininum pinney island express inum WAP7 athyavashayam aanu.. WAP-7 is not for the speed. Its for better acceleration. This train has so many halts and needs to accelerate better so a WAP7 is needed. Kerala Exp also needs a WAP-7 however there are not enough WAP-7 yet with RPM so that they can give it to all the deserving trains.