can you "feel" the turbo? if so, its mapped
Or - plug it into vagcom and do some logging, i used to be APR mapped, heres one of my logs on a motorway run, left is RPM, right is Airflow (G's) (you should see similar), you could also log actual vs requested boost to see what you are boosting at
3880 128.86
4000 155.58
4120 159.28
4280 159.89
4360 161.69
4480 162.22
4560 163.17
4680 163.53
4800 163.31
4880 165.11
5000 166.81
5080 167.06
5160 164.5
5240 165.97
5320 166.33
5400 166.19
5480 165.67
5560 164.86
5640 164.33
Hope this helps