What changes
Cluster 17 long coding, byte 1, bit 3 = 1. The cluster menu gets a lap timer screen that also shows oil temperature, boost and a shift indicator.
Details
MLB Evo instrument cluster coding (analog cluster with colour display and Virtual Cockpit): one bit changes, the other bytes stay. Oil temperature below 60 °C is not shown on this screen — that is a cluster parameter. If the cluster is SFD-protected, a3c warns before writing. To turn off, set the same bit to 0.