Optimized Stage 1 calibration for VW Transporter T6 (2015–2018) with 2.0 TDI CXFA engine, based on Delphi DCM6.2 ECU. This partial project disables the top speed limiter (VMAX) and raises output to approx. 177HP and 407Nm. Designed for flexibility, improved drivability, and flashable via CMD OBD.