Mini R53 Cooper S Stage 3 tuning.

Mini R53 Cooper S Stage 3 tuning.

The car has larger injectors and a smaller supercharger pulley. Its Siemens EMS2000 fuel model needed recalibration for the injector change, followed by dyno testing and road logging.

We use WinOLS and IDA to work with this ECU and check map definitions. We have found incorrect definitions in simplified tools, including a misfire-detection map labelled as volumetric efficiency. Editing the wrong map would raise the misfire threshold without correcting fuelling.

Road checks can reveal a flat spot or other issue that is not evident in one dyno gear. After-sales support includes any calibration adjustment needed after those checks.