Siemens SID806 ECU Tuning
Engine control unit used in 2 supported models from 1 make.
Citroen with the Siemens SID806
All Citroen tunes- Citroen C22006+1.4 HDIAutoTuner
- Citroen C32003+1.4 HDIAutoTuner
About Siemens SID806 tuning
The Siemens SID806 engine control unit is supported in 2 models from Citroen. 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.