TD5 PWM pump puls

what time will the fast PWM signal be available in software for spark 4? are there any issues with implementing this since it takes so long? If so i need to look at other solutions for the pump because I can not mash with pulse of 1s instead of 10ms and with auto valve its not easy to controll flow and then one off the points with using my system is gone if i need to start using manual valves for controlling flow