Bosch MED17.5.21 ECU Tuning
Engine control unit used in 42 supported models from 4 makes.
Audi with the Bosch MED17.5.21
All Audi tunes- Audi A12010+8X · 1.0 TSI/TFSI, 1.4 TSI/TFSI, 1.4 TSI/TFSI S&SAutoTuner
- Audi A32012+8V, 8V-FL · 1.0 TSI/TFSI, 1.2 TSI S&S, 1.4 TGI, 1.4 TSI CNG, 1.4 TSI/TFSI S&SAutoTuner
- Audi A42015+B9 · 1.4 TSI/TFSI S&SAutoTuner
- Audi A52016+F5 · 1.4 TSI/TFSI S&SAutoTuner
- Audi Q22016+1.0 TSI/TFSI, 1.4 TSI/TFSI S&SAutoTuner
- Audi Q32011+8U · 1.4 TSI/TFSI S&SAutoTuner
SEAT with the Bosch MED17.5.21
All SEAT tunes- SEAT Alhambra2015+1.4 TSI/TFSI S&SAutoTuner
- SEAT Arona2017+1.0 TSI/TFSI, 1.4 TSI/TFSI S&SAutoTuner
- SEAT Ateca2016+1.0 TSI/TFSI, 1.4 TSI/TFSI S&SAutoTuner
- SEAT Ibiza2008+6J, 6J-FL, A0 · 1.0 TSI/TFSI, 1.2 TSI S&S, 1.4 TSI/TFSI S&SAutoTuner
- SEAT Leon2005+1P, 5F MK1, 5F MK2 · 1.0 TSI/TFSI, 1.2 TSI S&S, 1.4 TGI, 1.4 TSI CNG, 1.4 TSI/TFSI, 1.4 TSI/TFSI S&SAutoTuner
- SEAT Toledo2006+5P, KG · 1.2 TSI S&S, 1.4 TSI/TFSIAutoTuner
Skoda with the Bosch MED17.5.21
All Skoda tunes- Skoda Fabia2015+1.0 TSI/TFSI, 1.2 TSI S&SAutoTuner
- Skoda Kamiq2019+1.0 TSI/TFSIAutoTuner
- Skoda Karoq2017+1.0 TSI/TFSI, 1.4 TSI/TFSI (US), 1.4 TSI/TFSI S&SAutoTuner
- Skoda Kodiaq2017+I · 1.0 TSI/TFSI, 1.4 TSI/TFSI S&SAutoTuner
- Skoda Octavia2005+1.0 TSI/TFSI, 1.2 TSI S&S, 1.4 TSI CNG, 1.4 TSI/TFSI, 1.4 TSI/TFSI (US), 1.4 TSI/TFSI S&SAutoTuner
- Skoda Rapid2012+1.0 TSI/TFSI, 1.2 TSI S&S, 1.4 TSI/TFSIAutoTuner
- Skoda Scala2019+1.0 TSI/TFSIAutoTuner
- Skoda Superb2015+1.4 TSI/TFSI S&SAutoTuner
- Skoda Yeti2008+1.2 TSI S&S, 1.4 TSI/TFSIAutoTuner
Volkswagen with the Bosch MED17.5.21
All Volkswagen tunes- Volkswagen Caddy2015+4 · 1.0 TSI/TFSI, 1.2 TSI S&S, 1.4 TGIAutoTuner
- Volkswagen Coccinelle / Beetle2011+1.2 TSI S&SAutoTuner
- Volkswagen Eos2006+1.4 TSI/TFSIAutoTuner
- Volkswagen Golf2003+V, VI, VII MKI, VII MKII, VIII · 1.0 TSI/TFSI, 1.2 TSI S&S, 1.4 TSI CNG, 1.4 TSI/TFSI, 1.4 TSI/TFSI (US), 1.4 TSI/TFSI S&S, 1.4 TSI/TFSI S&S ACTAutoTuner
- Volkswagen Golf Sportvan2014+1.0 TSI/TFSI, 1.2 TSI S&S, 1.4 TSI/TFSI S&SAutoTuner
- Volkswagen Jetta2005+1.4 TSI/TFSI, 1.4 TSI/TFSI (US), 1.4 TSI/TFSI S&SAutoTuner
- Volkswagen Lamando2015+1.4 TSI/TFSI S&SAutoTuner
- Volkswagen Nivus2020+1.0 TSI/TFSIAutoTuner
- Volkswagen Passat2010+B7, B8 · 1.4 TSI CNG, 1.4 TSI/TFSI, 1.4 TSI/TFSI S&SAutoTuner
- Volkswagen Polo2009+6C1, 6R, A0 Ph1 · 1.0 TSI/TFSI, 1.2 TSI S&S, 1.4 TSI/TFSI S&SAutoTuner
- Volkswagen Scirocco2008+1.4 TSI/TFSI, 1.4 TSI/TFSI S&SAutoTuner
- Volkswagen Sharan2015+1.4 TSI/TFSI S&SAutoTuner
- Volkswagen T-Cross2018+1.0 TSI/TFSIAutoTuner
- Volkswagen T-Roc2017+1.0 TSI/TFSIAutoTuner
- Volkswagen Taigo2020+1.0 TSI/TFSI, 200 TSI, 200 TSI (ethanol)AutoTuner
- Volkswagen Taigun2021+1.6 MSIAutoTuner
- Volkswagen Taos2020+1.6 MSIAutoTuner
- Volkswagen Tiguan2007+1.4 TSI/TFSI, 1.4 TSI/TFSI S&SAutoTuner
- Volkswagen Touran2010+1.0 TSI/TFSI, 1.2 TSI S&S, 1.4 TSI CNG, 1.4 TSI/TFSI S&SAutoTuner
- Volkswagen Up!2012+1.0 TSI/TFSIAutoTuner
- Volkswagen Virtus2018+1.6 MSI, 170 TSI, 170 TSI (ethanol), 200 TSI, 200 TSI (ethanol)AutoTuner
About Bosch MED17.5.21 tuning
The Bosch MED17.5.21 engine control unit is supported in 42 models from Audi, SEAT, Skoda, 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.