Bosch E17.5.21 ECU Tuning
Engine control unit used in 1 supported model from 1 make.
Volkswagen with the Bosch E17.5.21
All Volkswagen tunes- Volkswagen Golf2017+VII MKII · e-Golf (35.8kWh)AutoTuner
About Bosch E17.5.21 tuning
The Bosch E17.5.21 engine control unit is supported in 1 model from Volkswagen. 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.