First thing I would do is lower your gain to "5" this should build the boost slightly slower and let the system properly report the boost.
Also try changing the mode to "manual" and start with the value of "50" see what this nets you, then up the number towards "100". 0 in manual mode is stock boost, meaning whatever the WG spring is set to, i think its 8 psi.
Also try changing the mode to "manual" and start with the value of "50" see what this nets you, then up the number towards "100". 0 in manual mode is stock boost, meaning whatever the WG spring is set to, i think its 8 psi.