Siemens MSD85 ECU Tuning
Engine control unit used in 13 supported models from 3 makes.
Alpina with the Siemens MSD85
All Alpina tunes- Alpina B52010+4.4 V8 bi-turboAutoTuner
- Alpina B6 S2009+4.4 V8 bi-turboAutoTuner
- Alpina B72010+4.4 V8 bi-turboAutoTuner
BMW with the Siemens MSD85
All BMW tunes- BMW 5 GT-serie2009+F07 · 50iAutoTuner
- BMW 5-serie2010+F10-F11 · 50iAutoTuner
- BMW 6 Gran Coupé-serie2012+F06 · 50iAutoTuner
- BMW 6-serie2011+F12-F13 · 50iAutoTuner
- BMW 7-serie2008+F01-F02 · 50iAutoTuner
- BMW X52007+E70, E70-LCI, F15 · 50iAutoTuner
- BMW X5 M2008+E70 · 4.4 (M)AutoTuner
- BMW X62008+E71, F16 · 50i, 50i Activ HybridAutoTuner
- BMW X6 M2008+E71 · 4.4 (M)AutoTuner
Wiesmann with the Siemens MSD85
All Wiesmann tunes- Wiesmann GT / Roadster2003+4.4i (MF5)AutoTuner
About Siemens MSD85 tuning
The Siemens MSD85 engine control unit is supported in 13 models from Alpina, BMW, Wiesmann. We read, modify, and flash it with AutoTuner, then verify the result on our Dynojet 424xLC2 in Jenison, MI. A custom calibration optimizes fueling, ignition timing, boost, and torque limits for your exact build.
Don't See Your Vehicle?
These lists cover off-the-shelf tuning platforms. We also do standalone ECU installs and custom calibrations, so reach out and we'll tell you what's possible for your build. Compatibility data last updated 2026-09-24.