Mercedes-AMG A45 | ECU Tunes

A45 AMG ECU tunes for the M139 2.0T — Stage 1 through Stage 2 calibrations via remote OBD flash. The M139 responds aggressively to recalibration with gains of 40–80 WHP on stock turbos depending on fuel octane and supporting hardware. Pair with a downpipe and intercooler for full Stage 2 power. Browse tunes below or check the full Tuning Exchange.