BMW M Double Clutch Transmission (GS7D36SG)
Type: Dual-clutch
The BMW M DCT is a 7-speed dual-clutch transmission used in S55, S63 and some N55-powered M Performance models. It offers faster shift times and direct mechanical engagement.
Key Features
- 7-speed dual-clutch
- Used in M cars and M Performance models
- Faster shift response than torque converter
- TCU calibration available for shift behaviour
Compatible Engines
TCU Calibration Context
A TCU (Transmission Control Unit) calibration can complement an engine remap by adjusting shift points, torque limits, and shift firmness to match the increased power output. This is especially relevant when the engine calibration raises torque beyond the factory transmission torque converter or clutch thresholds.
TCU calibration is available for the BMW DCT and is recommended alongside Stage 1 or Stage 2 engine calibrations for the best driving experience.
BMW File Service
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Prepare the original ECU file, vehicle details, fuel and hardware setup before opening a file request.
Request a TCU FileOriginal ECU File
Read via OBD, Bench or Boot
Vehicle Details
Model, year and specification
Fuel Information
Fuel type and octane rating
ECU Identification
Hardware and software version