BMW File Service
Professional ECU calibration files for the complete BMW range. Stage 1, Stage 2, custom calibration and TCU tuning — developed in-house, validated on dyno, and trusted by professional tuners worldwide.
Precision Calibration
Every file is engineered for your specific BMW engine variant, hardware level and operating conditions.
Dyno Validated
Our calibrations are developed and validated on a hub dyno with comprehensive datalogging.
Fast Turnaround
Most files delivered within 30 minutes during business hours. Custom calibrations within 24 hours.
Global Support
Trusted by professional tuners in 40+ countries. Remote file service with full technical support.
What We Offer
JB Remap File Service provides professionally engineered ECU calibration files for the complete range of modern BMW petrol and diesel engines. Our calibrations are developed in-house using a hub dyno, comprehensive datalogging and real-world validation.
We support all major ECU platforms including Bosch MG1, MD1, EDC17, Siemens MEVD17.2 and MSD80/81. Whether you need a straightforward Stage 1 file for a 320d or a custom-calibrated Stage 2 map for an M4, our engineering process delivers measurable, reliable results.
Every calibration is built from your specific original ECU read — never from a generic database file. This ensures the calibration matches your exact DME variant, production date and market adaptation.
Related BMW Resources
Get Started
Submit your BMW ECU file through the File Service Portal.