Hi There, I have recently bought a 11/89 525i with auto gearbox. I understand that from around 1991 the auto box was a 5 speed, however I am sure mine is a five speed. Would this be a factory 5 speed or is it more likely to have been updated. It has no economy/sports button on the shifter panel.
Also if I retro-fit an OBC from an E32 735, I believe the range calculation may be inaccurate due to the different fuel tank sizes. Is there any way to re calibrate this - I have searched most of the info available on recalibrating Average Fuel consumption etc.
Thanks
Garry - Western Australia