those graphs look horrible
the bloke who tuned it surely could have done a much better job.
have you got a larger fuel pump, an adjustable fuel regulator, a z32afm and a nice clean air filter / fuel filter?
these items really help (in my opinion / experience only) when tuning a safc for 'power'
also, should have been tuned in 3rd gear (optimal - if automatic box then pull the brown fuse in front of battery, to hold 3rd), if not then 2nd gear.
got to say, my graphs with my safc tunes (4 now) have all been much smoother then yours.
but then again, dont you have poor quality fuel in Cairns?