i'm not too sure about how autos behave on dynos, although you do realise that you're boost level is only at 17.5psi dropping to 15psi.
id expect this turbo to start waking up at a minimum of 20psi so maybe first thing is to install a stronger spring in your wastegate and then turn the boost up a little more.
btw, the first graph shows 295rwkw, that's quite respectable power there.