Take the 2015 Audi A6 (C6) 3.0 TDI CVUA up to Stage 4 performance with this Bosch EDC17CP44 calibration bundle. Eleven ready-made variants span mild Stage 1 through aggressive Stage 4, each refining torque structure, boost control, rail pressure and injection timing while keeping factory thermal safeties. Optional modules disable DPF, EGR and SCR/AdBlue, lift the speed limiter, add antilag for quicker spool and suppress swirl-flap–related DTCs. Supplied as a complete binary containing the untouched Original plus all tuned files, compatible with Trasdata, FLEX, KT200 or any EDC17 bench/boot tool. Motorsport / off-road use only.