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Change log
v1.0 — 2025-06-21
• Initial release of a full Stage 1 and Stage 2 tuning package for the BMW Z4 E89 35i (Siemens MSD8x).
• Provides a complete tuning path for both stock and modified vehicles.
Release notes
v1.0 — 2025-06-21
• Package includes three files: Original, Stage 1, and Stage 2.
• Confirm software string 0044CC0ILA0SIGR3S before flashing.
• Stage 1: For a mechanically stock vehicle. High-octane fuel recommended.
• Stage 2: Requires upgraded hardware (high-flow downpipes and intercooler) for correct operation.
• Stage 2 file is for off-road or competition use ONLY.