Stage 2 Supra 3.0T B58B30M1 — MG1CS201 R4C9H6B5BKLZX4 Bosch — ECU Files R4C9H6

Change log

  • v1.0 — 2025-07-29
    • Initial release of the Stage 2 calibration for the A90 Supra (Bosch MG1CS201).
    • A comprehensive revision of all performance maps for vehicles with an upgraded exhaust system.

Release notes

  • v1.0 — 2025-07-29
    • Package includes Original + Stage 2 binaries.
    • Confirm software version R4C9H6B5BKLZX4 before flashing.
    IMPORTANT: Requires an upgraded high-flow or decat downpipe for correct operation. An upgraded intercooler is also recommended.
    • Designed for a mechanically modified vehicle; high-octane fuel required.
    • For off-road or competition use ONLY.​
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