Hello!

I am currently working on my BMW 1-series where i have swapped the boring 1,6L straight 4 for a m54B30 with a GT35 turbo with the stock MS43 ecu from m54b30. Due to swedish regulation regarding changing an engine you have to go trough a special organisation to get it road legal where they demand that you change a major part of the cars handling. Thus i have (among other things) changed the rear to 325D hubs, axels and diff and im currently thinking about ABS and DSC.

First of all, since i the 325D hub has different amount of "gears" on the abs-ring compared with the e87 stock abs-ring, do i need to reprogram the abs-module? And in that case, with what software?

Secondly, i would like to get the DSC to work and that requires the abs-module to send wheel speed data to the ECU. Do you guys have any idea if the siemens ecu (MS43) and the bosch motronic which was the stock ecu in the 1-series share the same canbus speed and protocols?

Best regards
Hugo