Stage 2 ECU file for VW Jetta / Lamando 1.4 TSI (CAVD engine, 2017) with Bosch MED17.1.21 ECU and software version 013996. Designed for enhanced performance with supporting hardware (downpipe, intake, intercooler), this file provides improved boost targets, fuel and ignition control, and sharper throttle response. Supplied as complete binary for bench flashing.