BOSCH ME9.1 Chiptuning
The BOSCH ME9.1 is used in Car vehicles from makes such as BMW. Our library holds verified solution files for this ECU family.

ME9.1 chip tuning and remap solutions
The Bosch ME9.1 is an engine control unit used in cars from makes such as BMW. Prime Chiptuning always builds ME9.1 files from the original read of the vehicle; generic files are not used.
Solutions offered for this ECU family include Speed Limiter (Vmax) Removal and Stage 1 Remap. Which ones apply to your vehicle depends on the exact ECU variant, software version and engine; we check this from the read file before the work starts.
How a ME9.1 remap is done
- The ME9.1 is read by OBD, bench or boot depending on the variant, and the original software is backed up.
- The original file is modified for the vehicle, engine and requested solution; the checksum is corrected.
- The file is written, fault codes are checked and the vehicle is road tested.
- The original backup is kept, so the vehicle can be returned to factory software at any time.
Why Prime Chiptuning for ME9.1
Our service points tune the ME9.1 for each vehicle individually, with support after delivery. Workshops with their own tools can order ME9.1 files on the ECU Prime file platform.
Are you a tuner or dealer?
Verified Stage 1, DPF, EGR and AdBlue files for the BOSCH ME9.1 are available on the EcuPrime file service: upload your original file and compatibility is measured in seconds.
BOSCH ME9.1 files on EcuPrime →Notify me when a new BOSCH ME9.1 solution is released
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