first of all you need to set learn gear in each gear & drive the car @ around 2000 rpm in each gear then press 1of the buttons to set/record it. cant remember which button?
(boost duty) @ around 60% = 1 bar on standard turbo!
(boost limet) needs to be set at around 1.10 to 1.15 for boost @1 bar. this means if boost reaches this limet it will lower it to prevent boost spike!
(f/b speed) is to sort boost fluctuation out! you will need a lower number in higher gears & a higher number in lower gears! "trial & error"
(start duty) you may need too raise between 2-5 % in each gear to reach boost target in each gear!
alot of trial & error with the AVCR but its worth it!
hope this helps? or for more info look here!
http://www.fccuk.org/documents/howtoguides/ApexiAVC.pdf