Factory variant coding written to the vehicle's control units over OBD, from the D-Sync app. Free for OTS customers — any active OTS license on the account enables every coding function, unlimited use, no per-function fee.
Available functions (beta): front & rear exhaust valve deactivation for pre-CPC 4.0T cars (W205 C 63 / GLC 63 7-speed and AMG GT C190); stationary pops & bangs switch for China-market C 63; RACE MODE activation for the W205 C 63 via the C 63 S coding configuration; brake system coding for W205 C 63 / C 63 S (steel or CCB carbon-ceramic discs); precise ESP parameter adjustment matched to brake caliper and material. New in app V2.0.6: ESP190 brake calibration adjustment for the AMG GT (C190); full Variant Coding of the MRG1 (M256) engine control unit; and all-function coding of the DRVU_NG AMG drive unit module — for AMG and non-AMG models with the 9-speed gearbox. New in app V2.0.7: full MED177 engine control unit coding for M157 / M278 engines — on S 63 / CLS 63 / E 63 / ML 63 / GLE 63 / GL 63 / GLS 63 cars that shipped without factory pops & bangs, editing the ECU's SOUNDDESIGN coding activates the factory dynamic pops & bangs (a D-Sync ECU tune is still needed to intensify the effect). The function set is being expanded progressively; availability depends on model year and ECU software version.
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