Recently I was involved in a project that exposed some hard coded SOI limits in the Explorer ST. It's likely this limit exists in all of the Ecoboost vehicles. In this particular situation, we were unable to get SOI where we wanted it, even though all of the parameters that clip it had been raised.
Through some creative code patching, we developed an OS Mod that both removes this SOI limit so it will follow the injection timing tables, and adds the the ability to log SOI, EOI Limit, and Injection Window in VCM Scanner
VCM Suite 4.11.518 and newer will have this for Explorer ST.