Stage 2 Mercedes GL550 CGI 4.7 BiTurbo ECU Tune – File for Bosch MED17.7 (Hard + Normal) 530188

Change log

  • v1.0 — 2025-05-25
    • Dual-mode Stage 2 build (Normal & Hard)
    • Boost, torque and ignition maps customised
    • Full binary read from MED17.7
    • All checksums validated with OLS807​

Release notes

  • v1.0 — 2025-05-25
    • Stage 2 calibration for GL550 CGI
    • Hard version = maximum torque & throttle response
    • Normal version = smoother ramp and improved driveability
    • Supplied as full binary with verified CS​