So it appears to be my gearbox is fine but my final drive (differential) might be wrong the 114I should have a ratio of 2,81 but mine appears to have 3,08 (counting and calculating after spinning the axle and tire by hand) the 3,08 is mounted on the 116i / 118i i'll dig down deeper in to this but this might be the solution. now i'm figuring out if i have to replace the diff either it is codable.
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