BMW MS41 Custom Forced-Induction Tuning — M52/S52

BMW MS41 Custom Forced-Induction Calibration

This is custom calibration work for the vehicle's current hardware and fuel—not an off-the-shelf file. Built for turbocharged and supercharged M52/S52 combinations using the Siemens MS41 ECU.

Scheduled Calibration Block

• Your purchase reserves one scheduled calibration block of up to 3 hours.
• The block includes setup review, connection time, datalog review, calibration changes, revisions, and customer communication during the appointment.
• Sessions are scheduled in Eastern Time. Purchasing does not create an open-ended support window.
• If the work exceeds the included block, additional time must be purchased and scheduled before calibration continues.

Included

• Fuel, ignition, VANOS, boost-related load control, and drivability calibration where supported
• Remote, local, or scheduled dyno calibration workflow
• Calibration for the approved hardware and fuel configuration supplied with the order

After purchase and scheduling

Our team will email the address used at checkout to confirm the vehicle, hardware, fuel, tuning goals, and an available appointment time. Text or phone follow-up may be used when needed. Tuning sessions are scheduled in Eastern Time.

Vehicle Readiness

The vehicle must be mechanically complete, safe to operate, and ready to make repeatable logs before the appointment.

Vehicle-related troubleshooting is not free tuning time. Mechanical issues, wiring faults, boost or vacuum leaks, fueling limitations, overheating, incorrect sensor data, incomplete installations, or connection problems may prevent completion within the purchased block. Remaining work will be scheduled after the issue is corrected, and additional time may be required.

Additional Time

• Remote calibration or diagnostic support: $100 per hour
• Local or dyno calibration support: $125 per hour

Additional time is sold in one-hour increments and must be scheduled. Dyno rental, flashing licenses, cables, interfaces, and third-party software are separate unless the order specifically states otherwise.

Hardware Changes

The calibration covers the configuration submitted for this order. Changes to the engine, turbo or supercharger, injectors, fuel system, MAF/MAP sensor, fuel, or other major power hardware may require additional calibration time or a new service.

Why Undisputed

Undisputed brings professional calibration experience developed since 2017 across factory and standalone engine management, multiple fuel combinations, daily-driven street cars, and serious track builds—including 800+ horsepower applications for customers in the United States and abroad. Our standard is clear communication, useful data, clean drivability, and calibration decisions built around the actual vehicle.

Specific power is never guaranteed. Results depend on vehicle condition, hardware, fuel quality, environment, and safe operating limits.