You can't access the 1000w power level unless you are running the Cyclotricity LCD1 and controller, it has custom programming with the P6 function.
I have seen 2 versions of the same displays with one version stating that it has p6 function like this https://www.tdrmoto.com.au/products/kt-controller-48v-30a-kt-lcd8-display-for-48v-1000w-electric-bike-ebike-kitok thought as much. or change the controller. thanks for the advice. looks like its either change the kit or bit the bullet and pay cyclotiricty.