BMW M ECU references
This branch sits under Siemens / Continental. Shared methods for the examined MSS52/MSS54/MSS54HP definitions live here; ECU-specific maps, file layouts and software records remain under each controller and its variants.
| Branch | Reference coverage |
|---|---|
| MSS52 | D409/D444 definitions, fueling, ignition, VANOS, driver demand and torque. |
| MSS54 | Definition matching, hw2801 map examples and partial-file/checksum context. |
| MSS54HP | HP-specific file geometry, hw2701 map examples and CSL software/hardware context. |
Shared guides
- Definition files and map interpretation — identity, naming, confidence fields and alternate views.
- Calibration validation and change records — original reads, operating-state evidence and reviewable results.
- Choosing ECU definition files — the general provenance reference.
The new guides explicitly cover MSS52, MSS54 and MSS54HP. Their placement under MSS does not extend their definitions, addresses or tool support to every ECU in this series.
Other MSS branches
The existing MSS50, MSS60, MSS65 and MSS70 indexes retain their own research, flashing or definition sources. Add hardware identification, complete software, file format and evidence with each future expansion.
Sources
Curated reference notes. Applicability follows the cited sources; hardware testing by this wiki is not implied.
- MSS52-XDF. Ken Malinich and credited contributors; MIT licence. Source revision a04c0d24fe63; accessed 2026-11-10.
- MSS54 and MSS54HP XDFs. saildot4k and the project contributors. Source revision dd845dd34225; accessed 2026-11-10.
- MSS6x Flasher. terraphantm and project contributors; GPL-3.0. Source revision eabffb13f7f6; accessed 2026-11-10.
- MS4X Wiki: Definition Files. MS4X Wiki contributors; individual definition authors retain their credits. Source revision oldid 23632; accessed 2026-11-10.