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The Siemens MS43 is a powerful engine management system used in many 6-cylinder BMWs from the early 2000s, like the E46 and E39, known for its extensive tuning capabilities.
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. (7 models · 17 engine variants)