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New Tuning File Available: BMW 540i B58B30M0 ECU Firmware – MG1CS003 R0C9J8B2B (Decat + Vmax Removed) MG1CS003 - BMW 540i 3.0T B58 ECU tune with Decat and Vmax delete – MG1CS003 full binary file
Welcome to the official discussion thread for the BMW 540I 340hp tuning package. This calibration is specifically developed for the MG1CS003 ECU and optimized to work seamlessly with the Automatic Transmission.
Target Performance: 326.3PS / 240.0kW.
Share your experience!
Have you flashed this file? Drop your dyno graphs, 0-100 times, reviews, or ask any technical questions below!
➜ Download Tuning File / View Full Specs
Discussion & Reviews: BMW 540I 340hp
Welcome to the official discussion thread for the BMW 540I 340hp tuning package. This calibration is specifically developed for the MG1CS003 ECU and optimized to work seamlessly with the Automatic Transmission.
Target Performance: 326.3PS / 240.0kW.
Share your experience!Have you flashed this file? Drop your dyno graphs, 0-100 times, reviews, or ask any technical questions below!
Extended Product Information
- ECU tuning for BMW 540i 3.0 B58 (MG1CS003)
- Stage 2 calibration with boost, torque and fuel maps optimized
- Top speed limiter (Vmax) completely disabled
- Decat logic included — post-cat lambda monitoring off
- Supports high-flow exhaust and downpipe setups
- Checksum not calculated — external tool validation required
- Supplied as complete binary file with original version
- Flashable via Autotuner OBD protocol
- For off-road, motorsport or export vehicles
➜ Download Tuning File / View Full Specs
