Microcontroller evidence
A researcher examining an M3.8.3-labelled ECU reported an Intel 87C196-family MCU and discussed the AN87C196KR. The report is specific to the unit examined; it is not a complete manufacturer hardware specification. Nefarious Motorsports: M3.8.3 discussion.
Application context
Bosch's catalogue lists Audi A3 1.8 turbo AGU under the combined label M 3.8.2/3, without assigning every car to one of those versions. Bosch vehicle component applications, Audi A3. Check the actual ECU number and vehicle documentation.
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.