Stage 2 S3 8V 2.0 TFSI CJXC — Simos 18.1 SC800O3000000 Siemens — ECU Files 8V0906259F

• Initial release of a Stage 2 + Vmax calibration for the Audi S3 8V (Simos 18.1).
• A comprehensive revision of all performance maps for vehicles with an upgraded exhaust system.
​

• Package includes Original + Stage 2 (Vmax Off) binaries.
• Confirm ECU number 8V0906259F and software SC800O3000000 before flashing.
• IMPORTANT: Requires upgraded hardware (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.​