Stage 1 / Stage 2 OTS mappacks by engine family — M177 / M178 V8 ($950), M276 V6 ($799 / $839), M133 ($839), M157 / M278 ($839) and M256 ($900), all including the D1 Wi-Fi dongle and covering one VIN. Online checkout for the US & Canada; every other supported region orders by email. Full per-car stock / Stage 1 / Stage 2 figures: all supported cars.
TCU Flash License — VGS-NAG3 (Mercedes 9-speed): $799 USD including the TCU OTS Tune, $599 USD for existing D-Sync OTS customers, one VIN per license. Order by email: duke@yd-autogroup.com.
Each mappack contains a Stage 0 factory-power baseline plus Stage 1 and Stage 2 OTS files calibrated separately for AKI 91 and AKI 93 fuel (five files per car), plus two independent app controls: the Exhaust Burble Tuner (AMG models, included free) and DTC management. The exact file list is matched to the car's ECU software version after VIN verification.