I think I'm having the same issue as described in
this thread. If I'm accelerating with partial throttle (say 75%), all 8 bars on the gauge light up, but once I push it to the metal, flow meter drops to 4 bars. That can't be right so I'm assuming that the FAV isn't pulsing anymore with higher F-IDC and it is causing the flow meter to read wrong. Is there any way to reduce the F-IDC seen by the HFS-3 (change some components on the board)?