SR20DET - AVCR tuning .. please help.. duty cycle ?

[240waters]

i dont think my avcr is tuned right .. at low boost i have it set at .85 bar with 36% duty cycle and at high boost .90 bar with 46% duty cylce

with my car at low boost (.85 bar and 36% duty cycle) it bogs down in high rpms but on high boost it doesent but the boost spikes really high.

could this be because of the duty cycle.. what is duty cycle? could anybody tell me what their set up is or help me out with my avcr