Identification
Snap-on's software application guide includes an M2.9/3.8.1 label. The specific processor for a particular M3.8.1 board is not confirmed by that listing. Its placement here is a research candidate, not evidence that all M3.8.1 ECUs use an 8xC196.
Identification and scope
Record the Bosch and vehicle-manufacturer ECU numbers, engine and vehicle details, software ID and board or processor markings before using technical information. This page does not establish pin functions or interchangeability between variants.