13/05/2026
Working on the earliest version of the Bosch Motronic, M1.0 from a BMW. No real information is available on the digital chipset which is believed to be 1802 CPU based. Date codes on chips show 1979-1981 vintage. Fortunately the fault was with an analogue chip. These are not the earliest ECU's that we work on just the earliest digital CPU based Bosch ECU.