Siemens SID301 ECU Tuning

Engine control unit used in 18 supported models from 3 makes.

Dacia with the Siemens SID301

Nissan with the Siemens SID301

Renault with the Siemens SID301

About Siemens SID301 tuning

The Siemens SID301 engine control unit is supported in 18 models from Dacia, Nissan, Renault. 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.

Browse all supported ECUs and TCUs

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.