Can those who use the Apexi - AVC-R post their boost-duty and START DUTY settings please?
I am running 1.45 kgcm (20.6psi) and at the onset of boost it spikes up to 1.65kgcm then goes down to bout 1.45 and then boost jumps around. i played around with the duty cycle and start duty and still can't get it to work.

Any help appreciated.

 

well i have 55% duty cycle from 3500-5000 and high 60's after 5k. I do that to prevent the boost spike. That'll help you out. And either keep all the settings down to 3 on the screen where it displays all 5 gears and a number above it. It's the setting where you determine how much boost spikes and how fast it responds per gear.