ScanGauge 2, Lhk ?

[GasSavers_Tom]

When driving at steady-state my car's board computer for instance says 4L/100km but the SGII says around 6L/100km.

Where is that big difference comming from?

I know that the B.C. is very close to the right value.
But can i calibrate my way out of it on the SG II?

[JanGeo]

Get your speed calibrated on the SG2 and then check and make sure you have the correct engine size and finally the fuel adjustment when you fill up should bring it closer to actual fuel use.