6.0 Powerstroke FICM tune large pulse width

[sasdakota]

What is the largest Pulse width any of you have on a log? I am seeing 2.5ms in the log with Pulse Width PID, even though I am commanding 120mm3 in the same log and the FICM tune is 3.0ms at 120mm3.

Curious if this is a limitation or what?

[blackf250]

In my experience you can 3.0ms/pw until about 3200rpms. The higher rpm you go the window will get smaller. At 4400rpms which is the highest I've taken my engine, I will see about 2.5ms/pw.