Engine Control Module EPROM Programming: Notes
With the introduction of M3.X & DME/ECM control modules it was no longer necessary to replace the entire control module in order to install updated engine operating programs and/or data.
ENGINE CONTROL MODULE EPROM PROGRAMMING DATA
| M3.X | DME/ECM Version | Vehicle Application |
| M3.1 | E36 - 325i/is (up to 8/92) | |
| E34 - 525i (up to 8/92) | ||
| M3.3 | E31 - 840Ci (9/93 - 12/95) | |
| E32 - 740i/iL (9/92 - 8/94) | ||
| E34 - 530i/it & 540i (3/93 - 12/95) | ||
| E38 - 740i/iL (9/94 - 12/95) | ||
| M3.3.1 | E36 - 325i/is & M3 (as of 9/92) | |
| E34 - 525i/it (as of 9/92) |
M3.x engine control modules allow EPROMs:
- To be removed & replaced
- Programmed or updated depending on control module version