31 March 2026

Stage 1 improved for the BMW M850i

We are proud to announce that Dyno-ChiptuningFiles has improved stage 1 software for the BMW M850i with 530hp!

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Capacity: 4395cc    
Bore x stroke: 89.0 x 88.3 (mm)
Compression ratio: 10.5 (:1)
Power approx: 530hp
Power output: 660hp
Torque approx: 750nm
Torque output: 900m
ECU: Bosch MG1CS201
Read Method: AutoTuner BENCH

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