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ZF 8HP Torque Converter Automatic

Type: Torque converter automatic

The ZF 8HP is the most common automatic transmission across modern BMW platforms. It pairs with B48, B58, N55, B47, B57 and N57 engines. TCU calibration can complement an engine calibration for improved shift behaviour.

Key Features

  • 8-speed torque converter
  • Multiple gear ratios across variants
  • TCU calibration available
  • Wide BMW platform coverage

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 ZF 8HP and is recommended alongside Stage 1 or Stage 2 engine calibrations for the best driving experience.

BMW File Service

Need a Custom BMW Calibration?

Prepare the original ECU file, vehicle details, fuel and hardware setup before opening a file request.

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Original 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