Page organisation in this revision
- Page type
- Technical article
- Subject
- Tuning
- Parent
- Siemens MSS54
- Applies to
- Siemens MSS54
- Tool groups
- None
- Manufacturers
- BMW
Changes from revision 1 to revision 1
Removed text is struck through; added text is highlighted.
Exact definition scope
This reference records observations from Complete XDFs/hw2801_V4_Complete.xdf at commit dd845dd34225, whose header declares 211322002801J469 and a 32 KiB region. Item descriptions specify the BMWFlash/Galleto slave-then-master file orientation. MSS54 hw2801 Complete XDF.
Sampled map records
SymbolData offset in this partialRPM columns × rowsValue equationSource MatchRatioKF_TI_N_RF0x08D218 × 12x/1280.99KF_TI_N_RF_VL0x0B3218 × 3x/1281.00KF_TZ_GRUND0x54DA18 × 12x/100.99KF_TZ_VL0x56B618 × 3x/101.00KF_EVAN1_SOLL0x0FD016 × 16x0.81KF_AVAN1_SOLL0x12F616 × 16x0.64
The fuel/ignition examples use the rf axis with x/1000 conversion. The camshaft examples use aq_re and x*100/32768 for that axis. MSS54 hw2801 Complete XDF.
Interpret the records conservatively
These offsets belong to the named partial-file orientation. They are not physical ECU addresses. Match ratios are the source’s comparison results, not runtime validation scores. The weaker numerical match on a camshaft record should remain visible in any later explanation.
For an arithmetic check, the stated filling conversion displays raw 1000 as 1.0. A percentage representation of the same numeric fraction would display 100%. Check the definition and logged units before moving values between displays or constructing a histogram.
Build a worked calibration record
Keep the selected item’s axes, width, signedness and description with a byte comparison. For fueling, compare target and measured lambda in a documented state; for ignition and camshafts, keep command/actual and intervention evidence where available. Use the shared validation record and retain unresolved assumptions.
The HP hw2701 example records different offsets for similar names and belongs to its own software context.
Sources and evidence
Original Tuning Wiki reference notes. Definition data and source-code observations are identified as such; they do not establish runtime behaviour or a tested calibration. Validation suggestions and worked arithmetic are editorial guidance. Sources checked 10 November 2026.
MSS54/MSS54HP: saildot4k, the OpenSource MSS54 Project and credited contributors. Use the original files and retain their individual credits.
MSS54 hw2801 Complete XDF — commit dd845dd34225.
Rendered revisions
Open each version to inspect formatting, tables and photographs.
Revision 1: MSS54 hw2801 calibration reference
Exact definition scope
This reference records observations from Complete XDFs/hw2801_V4_Complete.xdf at commit dd845dd34225, whose header declares 211322002801J469 and a 32 KiB region. Item descriptions specify the BMWFlash/Galleto slave-then-master file orientation. MSS54 hw2801 Complete XDF.
Sampled map records
| Symbol | Data offset in this partial | RPM columns × rows | Value equation | Source MatchRatio |
|---|
KF_TI_N_RF | 0x08D2 | 18 × 12 | x/128 | 0.99 |
KF_TI_N_RF_VL | 0x0B32 | 18 × 3 | x/128 | 1.00 |
KF_TZ_GRUND | 0x54DA | 18 × 12 | x/10 | 0.99 |
KF_TZ_VL | 0x56B6 | 18 × 3 | x/10 | 1.00 |
KF_EVAN1_SOLL | 0x0FD0 | 16 × 16 | x | 0.81 |
KF_AVAN1_SOLL | 0x12F6 | 16 × 16 | x | 0.64 |
The fuel/ignition examples use the rf axis with x/1000 conversion. The camshaft examples use aq_re and x*100/32768 for that axis. MSS54 hw2801 Complete XDF.
Interpret the records conservatively
These offsets belong to the named partial-file orientation. They are not physical ECU addresses. Match ratios are the source’s comparison results, not runtime validation scores. The weaker numerical match on a camshaft record should remain visible in any later explanation.
For an arithmetic check, the stated filling conversion displays raw 1000 as 1.0. A percentage representation of the same numeric fraction would display 100%. Check the definition and logged units before moving values between displays or constructing a histogram.
Build a worked calibration record
Keep the selected item’s axes, width, signedness and description with a byte comparison. For fueling, compare target and measured lambda in a documented state; for ignition and camshafts, keep command/actual and intervention evidence where available. Use the shared validation record and retain unresolved assumptions.
The HP hw2701 example records different offsets for similar names and belongs to its own software context.
Sources and evidence
Original Tuning Wiki reference notes. Definition data and source-code observations are identified as such; they do not establish runtime behaviour or a tested calibration. Validation suggestions and worked arithmetic are editorial guidance. Sources checked 10 November 2026.
MSS54/MSS54HP: saildot4k, the OpenSource MSS54 Project and credited contributors. Use the original files and retain their individual credits.
Revision 1: MSS54 hw2801 calibration reference
Exact definition scope
This reference records observations from Complete XDFs/hw2801_V4_Complete.xdf at commit dd845dd34225, whose header declares 211322002801J469 and a 32 KiB region. Item descriptions specify the BMWFlash/Galleto slave-then-master file orientation. MSS54 hw2801 Complete XDF.
Sampled map records
| Symbol | Data offset in this partial | RPM columns × rows | Value equation | Source MatchRatio |
|---|
KF_TI_N_RF | 0x08D2 | 18 × 12 | x/128 | 0.99 |
KF_TI_N_RF_VL | 0x0B32 | 18 × 3 | x/128 | 1.00 |
KF_TZ_GRUND | 0x54DA | 18 × 12 | x/10 | 0.99 |
KF_TZ_VL | 0x56B6 | 18 × 3 | x/10 | 1.00 |
KF_EVAN1_SOLL | 0x0FD0 | 16 × 16 | x | 0.81 |
KF_AVAN1_SOLL | 0x12F6 | 16 × 16 | x | 0.64 |
The fuel/ignition examples use the rf axis with x/1000 conversion. The camshaft examples use aq_re and x*100/32768 for that axis. MSS54 hw2801 Complete XDF.
Interpret the records conservatively
These offsets belong to the named partial-file orientation. They are not physical ECU addresses. Match ratios are the source’s comparison results, not runtime validation scores. The weaker numerical match on a camshaft record should remain visible in any later explanation.
For an arithmetic check, the stated filling conversion displays raw 1000 as 1.0. A percentage representation of the same numeric fraction would display 100%. Check the definition and logged units before moving values between displays or constructing a histogram.
Build a worked calibration record
Keep the selected item’s axes, width, signedness and description with a byte comparison. For fueling, compare target and measured lambda in a documented state; for ignition and camshafts, keep command/actual and intervention evidence where available. Use the shared validation record and retain unresolved assumptions.
The HP hw2701 example records different offsets for similar names and belongs to its own software context.
Sources and evidence
Original Tuning Wiki reference notes. Definition data and source-code observations are identified as such; they do not establish runtime behaviour or a tested calibration. Validation suggestions and worked arithmetic are editorial guidance. Sources checked 10 November 2026.
MSS54/MSS54HP: saildot4k, the OpenSource MSS54 Project and credited contributors. Use the original files and retain their individual credits.