Stage 2 BMW X4 G02 40i B58 ECU File – MG1CS003 R0C9J8I4B / R0C9J8I4BCGNX0 (CAT OFF, Vmax OFF, Sport Display) R0C9J8I4B

Change log

v1.0 — 2025-06-01

• Stage 2 file with CAT OFF, Vmax disabled, and Sport Display unlock
• Optimized for FEMTO boot/bench protocol
• Includes original backup binary

Release notes

v1.0 — 2025-06-01

• Built for modified G02 X4 40i vehicles using performance exhaust/intake
• Enhances drivability, feedback and top-end freedom
• Not road legal — intended for dyno and competition use only

By registering with us, you'll be able to discuss, share and private message with other members of our community.

Top