How to change speed in cluster?

[1T2_Boy]

Hallo,

I changed cluster from Touran 1T2 to 1T3 (same like Golf MK5 to Golf MK6), all is good,
only one thing is bad, the speed on cluster is 7 km/h slower than the real speed I loged with gps.

Can I change the speed in cluster to the real speed in scales menu?

Thank you
1T2_Boy