If it is a new system, I'd suggest washing and styling a few times as often the curl will relax naturally. I've had systems that were all ringlets new, and became straight after wetting and styling. And if it hasn't been cut in, the curl will be much less obvious when cut short. You can also use a blow dryer when styling, this can impart some "memory" to the hair. For the "poofiness" I've worn a cap for a while to get it to lay down.

It is tricky to perm system hair, and can cause shedding.