# D-Sync ECU — Professional ECU Calibration > Professional ECU Calibration (iPhone/iPad app by LUN LIU.) - Source: https://appshunter.io/ios/app/d-sync-ecu/id6761677479 (this page in markdown: same URL + `.md`) - Developer: [LUN LIU](https://appshunter.io/developer/1890125123) - Category: Utilities - Price: Free - Age rating: 4+ - Requires: iOS 15.0 · 29 MB - Languages: American English - Released: 2026-04-08 - Data updated: 2026-09-05 - User reviews in markdown: https://appshunter.io/ios/app/d-sync-ecu/id6761677479/reviews.md ## What is D? D-SYNC ECU is the ultimate calibration platform for Mercedes-AMG and Mercedes-Benz owners who demand more from their vehicles. Unlock your car's full potential — D-SYNC delivers a seamless, wireless tuning experience straight from your phone. No laptop, no cables, no dealer. SUPPORTED ENGINES • M177 4.0L V8 BiTurbo — C63 S, E63 S, S63, GT 63 S, GLE 63 S, GLC 63 S, and more • M178 4.0L V8 BiTurbo — AMG GT / GT S / GT C / GT R / Black Series • M276 3.0L V6 BiTurbo — C43, E43, E450, GLC43, GLE43, S400, and more • M157 / M278 5.5L & 4.7L V8 BiTurbo — S63, CLS63, GLE63, GLS63, ML63, E63, and more • M133 2.0L Turbo — CLA45, A45, GLA45 (Gen 1 / 1.5) • M256 3.0L Turbo inline-six — E53, CLS53, GT53, GLE53 and 450 models PLUS TRANSMISSION TUNING • 9G-TRONIC (VGS-NAG3) — write calibrations directly to the 9-speed transmission controller Compatible control units: Bosch MED17.7.5 · MED17.7 V6LA · MED40AMG · MED17.7 (M157/M278) · Bosch MG1 (M256) · VGS-NAG3 (9G) HIGH-SPEED DATA LOGGING • Ready-made logging presets per engine, plus build-your-own profiles (up to 20 channels) • Boost, intake temps, knock, AFR/lambda, timing and 70+ parameters in real time • Auto-records your pull and saves it as a CSV tagged by VIN, date and time • Powerful viewer — multi-channel overlay, drag-to-read cursor, time-axis zoom and stacked view • One-tap cloud sharing so your tuner can refine the calibration LIVE HUD Turn your phone into a full-screen instrument cluster while you log. Big, glanceable gauges with per-cylinder knock and misfire, camshaft timing, and automatic over-limit alerts — portrait or landscape, with dedicated layouts per engine. Display only: it never touches your recording. EXHAUST POP & BANG TUNER (AMG only) Dial in custom exhaust pops & bangs on OTS tunes — presets plus advanced control, applied at flash. DTC DEACTIVATION Deactivate diagnostic trouble codes across all firmware versions, applied at flash. VEHICLE CODING (beta) Activate hidden features and adjust factory coding — including W205 brake/model coding and AMG 63 exhaust-flap coding. Supported coding is listed at d-syncworks.com. CONTROL-UNIT REPLACEMENT & CLONING (beta) Clone-write the next-generation Common Powertrain Controller (CPC NG), including control-unit replacement. AIRMATIC SUSPENSION CONTROL (beta) Dial in ride height on supported AIRMATIC chassis — AMG GLE/GLS (W167), S-Class (W222) and E-Class (W213). Save your favorite stances and recall them in a tap. ON-BOARD DIAGNOSTICS Read and clear fault codes with plain-language descriptions, right from the app. BUILT FOR AMG Every detail is engineered around the Mercedes platform — automatic ECU identification, per-vehicle configuration, and a tuner ecosystem that speaks your language. WHAT YOU NEED • D-SYNC D1 Bridge — WiFi hardware adapter (sold separately at d-syncworks.com) • A supported Mercedes-AMG / Mercedes-Benz listed above • A D-SYNC account and license Questions or support? Visit d-syncworks.com Note: M256 flashing requires a one-time bench unlock before wireless flashing is available. ** This racing product is for competition, closed-course use only. *** Use of this software may void portions of your vehicle's factory warranty. Some items may not be legal for on-highway use. D-SYNC makes no guarantees as to the legality of any parts used on highway vehicles and accepts no responsibility for compliance with your vehicle's factory warranty. ## Version history (last 5 releases) ### 2.0.7 — 2026-08-30 V2.0.7 Change Log More coding supported - MED177 (Pop and Bang on M157!) Fix some known issue ### 2.0.6 — 2026-08-24 V2.0.6 Change Log More coding supported - ESP190, DRVU_NG, MRG1 CPC Beta release ### 2.0.2 — 2026-08-19 V2.0.2 Change Log Now we can read the voltage with D1 dongle w. V1.5 firmware. ### 2.0.1 — 2026-08-18 Version 2.0 — our biggest update yet. NEW ENGINE & TRANSMISSION SUPPORT • M256 3.0T inline-six (GEN1) flashing — Bosch MG1 ECU (one-time bench unlock required) • M157 5.5L / M278 4.7L V8 BiTurbo — flashing and data logging • 9G-TRONIC (VGS-NAG3) — write calibrations to the 9-speed transmission LIVE HUD • Full-screen instrument HUD while you log — portrait and landscape • Per-cylinder knock & misfire, camshaft timing, and over-limit alert bands • Gear tile flashes on every shift; display-only, never affects your recording NEW TUNING TOOLS • Exhaust Pop & Bang tuner for OTS tunes (AMG only) • DTC deactivation across all firmware versions • Vehicle Coding (beta) — hidden-feature activation, W205 brake coding, AMG 63 exhaust-flap coding • CPC NG clone writing (beta), including control-unit replacement EXPERIENCE IMPROVEMENTS • Stay signed in — no more re-entering your password; email prefill and autofill on login • In-app update check on the Me page • Cleaner home screen with a dedicated Advanced Features hub • D1 dongle now tells you when its firmware needs updating (W205 coding needs firmware v1.3.1) Plus many fixes and performance improvements. Requires the D-SYNC D1 Bridge. Some features require Expert Mode, a license, or an extension module from Files. ### 1.9.9 — 2026-08-06 Fix some little bug. ## More apps by LUN LIU - [ECU Map Switcher by D-Sync](https://appshunter.io/ios/app/ecu-map-switcher-by-d-sync/id6761521552) All apps by LUN LIU: https://appshunter.io/developer/1890125123 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-05.*