I also have a BMW 120i B48 from May-2019. I have also thought about remapping the ECU. I reached out to a well-reputed tuning company in Denmark, asking for the expected output/performance after a remap with focus on reliability.
They gave me the answer, that I should expect 260-270 HP and 420-440nm of torque. Does anyone know how much torque the clutch and gearbox can handle? I guess there is a limit?
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