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TTS MasterTune BT Software


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MasterTune BT is a Windows-based ECM calibration development tool developed and designed specifically for use on all Delphi-equipped Harley-DavidsonĀ® motorcycles from 2001 through 2022.

MasterTune BT works with blue and green TTS communications interfaces. Some features may not be supported on all communications interfaces.

Note that MasterTune BT licensing is associated with the programming interface. A communications interface can be licensed to program either one or two vehicles, and the communications interface will 'lock' to the vehicle the first time it is used for programming.

MasterTune BT includes the following key features:

  • Saves the original factory calibration automatically.
  • Easily restore the original factory calibration back into the ECM.
  • Preset limits to prevent adjusting values beyond reasonable settings.
  • Stores original and the last table saved edits so tuner can return to previous configuration.
  • Comparison functions quickly identify changed regions in tables.
  • 2-D and 3-D graphing of tables to help visualize tuning maps.
  • Ability to print table graphs and table values.
  • Supports tuning using wideband O2 sensors. Requires an analog (green) communications interface.

Some of the calibration adjustments include:

  • Spark Advance, front and rear
  • Knock Control
  • Volumetric Efficiency, front and rear
  • Rev Limit
  • AE/DE fueling
  • EITMS settings
  • Idle Speed
  • Start/Warmup fueling
  • Primary Gearing changes
  • Fuel Injector size
  • Engine Displacement
  • AFR/Lambda Target
  • NOTE: Not all features are available in all calibrations.