Siemens SIMTEC76 ECU Tuning
Engine control unit used in 12 supported models from 3 makes.
Chevrolet with the Siemens SIMTEC76
All Chevrolet tunes- Chevrolet Cruze2009+1.6i, 1.8iAutoTuner
- Chevrolet Lacetti2005+1.8i 16VAutoTuner
- Chevrolet Nubira2003+1.8i 16VAutoTuner
- Chevrolet Optra2005+1.8i 16VAutoTuner
- Chevrolet Orlando2011+1.8iAutoTuner
- Chevrolet Sonic2011+1.8iAutoTuner
- Chevrolet Tracker2015+1.8iAutoTuner
- Chevrolet Trax2013+1.8iAutoTuner
Daewoo with the Siemens SIMTEC76
All Daewoo tunes- Daewoo Lacetti2002+J200 · 1.8i 16VAutoTuner
- Daewoo Nubira2000+J150 · 1.8i 16VAutoTuner
Holden with the Siemens SIMTEC76
All Holden tunes- Holden Barina2011+1.6iAutoTuner
- Holden Cruze2015+1.8iAutoTuner
About Siemens SIMTEC76 tuning
The Siemens SIMTEC76 engine control unit is supported in 12 models from Chevrolet, Daewoo, Holden. 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.