Bosch petrol ECU on a Tricore core — TFSI/TSI/MED, direct injection — found only on Mercedes (56 modifications). On the Bosch MED17.7.3, CHIPOK performs Stage 1/2 — power tuning, software removal of EGR, AdBlue, catalyst control, EVAP, disabling the intake flaps, Pops and Bangs, speed limit removal, DTC removal, return to stock, engine temperature fix and Cold Start Off. Flashing is done via KESS3 / Autotuner / CMD Flash / FGTech Galletto.
The Bosch MED17.7.3 unit is found on 56 different engines. Main brands: Mercedes (56).
The Bosch MED17.7.3 ECU supports: STAGE 2, COLD START OFF, CHECK STOCK OR NOT, NOx OFF, EGR OFF, STAGE 1, FLAPS OFF, DTC OFF, VMAX OFF, POP AND BANGS. Checksums are recalculated on the engineer's side in WinOLS5.
The Bosch MED17.7.3 is supported by: KESS3 (OBD bootloader), Autotuner, MPPS V21, KTAG (Bench for Tricore), Trasdata, CMD Flash. On production models OBD reading is usually enough; on locked variants — Bench (BDM/JTAG).
Stage 1 on the petrol Bosch MED17.7.3 reprograms ignition timing, lambda target, boost target and wastegate duty (on turbo), throttle response, VANOS/VVT phase, torque limiter.
The original bin/hex/ori is accepted after reading via KESS3 / KTAG / Autotuner / MagicMotorSport. Checksums are recalculated on the engineer's side.
OBD flashing of the Bosch MED17.7.3 — 25-30 minutes, Bench (if needed) — about an hour. The file processing itself takes 5-30 minutes after receipt.
The cost of a Bosch MED17.7.3 file is built in the calculator: you pick the operations you need (Stage 1, emissions removals, service operations) and the price is calculated with the package discount applied.