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The BMW Business Management System (BMS43) was used for 4-cylinder engines like the M43 and M44, providing reliable engine control.
Pick your vehicle below, and the configurator opens straight away with your engine and this ECU.
Open in configuratorPrices for the software calibration. The configurator shows the power your engine reaches.
Open your engine's page with stages, prices and power, or start straight in the configurator. (2 models · 3 engine variants)