Im having problem with EVC5 on my 7AFTE.

I confirmed all my connection is correct (follow the user manual). Whn i set my boost regulated at 80kpa and warning at 100kpa, i can boost all the way up to 110kpa and evc will thn drop my boost to stock actuator limit. My EVC doesnt hold boost at all.

Also understand EVC5 can dial all the way to 250kpa. I cant set 250kpa warning but on controller volume knob, max dial (turn all the way) can only it go 100kpa as per-show in on the screen.

Is there something wrong with my EVC?