Remapping files for Bosch BMS46

Bosch BMS46 remapping optimises engine performance on vehicles fitted with this Bosch engine control unit. The Bosch BMS46 is a petrol ECU found on engines rated between 115 and 118 hp as standard. It is widespread in the European market and supported by the main professional calibration services.

Available Bosch BMS46 remapping services

At EcuTracer we supply Bosch BMS46 remapping files for the following services: Stage 1, DTC Solution, Vmax Removal, Pop & Bang, Lambda / O2 Solution, Swirl Flap Solution. Every file is developed individually by our engineering team, with more than 25 years of experience in ECU calibration. We do not use generic files or automated solutions: each calibration is tailored to the exact specification of the vehicle.

Estimated Stage 1 gains

Typical Stage 1 gains are around +14% in power and +14% in torque, depending on engine condition and usage. These figures are based on real dyno results from workshops that use our platform.

Reading methods and compatible tools

The Bosch BMS46 can be read using the following methods: OBD. It is supported by professional tools such as Alientech KESS3, Autotuner, CMD Flash, Magic Motorsport Flex, bFlash. We accept both master and slave files.

Compatible vehicles

The Bosch BMS46 ECU is fitted to vehicles such as BMW Z3 1.8i 118hp, BMW 3 serie E46 – 1998 – 2005 316i 115hp, BMW 3 serie E46 – 1998 – 2005 318i 118hp. Browse our vehicle catalogue to see every model compatible with this ECU.

Order your professional files

If you run a professional workshop or tuning business and need Bosch BMS46 remapping files, register with EcuTracer for access to our B2B platform: delivery in under 1 hour, technical support in English and Spanish and competitive credit-based pricing.

For more technical information on the Bosch ECU family, see the official documentation from Bosch Mobility.