[Richard L]

There are two timers on the failsafe.

1. Transition delay timer (FSDL) .......... 0.2s - 0.6s.
2. Failsafe reset timer .......... ~3 seconds (fixed)

The Transition delay timer allows the flow signal to stablise before triggering a failsafe event. The start of the transition time is indicated by the onset of the B symbol. If fluid flow does not arrive inside the window area during this grace period, the failsafe will trip and reduce boost.

You can experiment of the FSDL trrimmer on the controller by extending of shorten this "grace" period.