Hi there, I have notice that op-com can do some kind of fine tiuning like:
fuel maximum adjustment (like -5% to +5%) a bit saves fuel on maximum pedal
EGR offstet adjustment (from -20 mg/strk to + 20 mg/strk)
Start fuel injection timing adjustment (ignition earlying) (from 0 to +5 degrees)
So you can find these adjustemt settings in Diagnostics->year->engine->special funktions->adjustments programing->read->
It can be active on 2.0 dti engines from 1997-2002.
be careful playing with EGR because if +20 mg/strk it always shi'ts more in your intake manifold !