At Grosvenor Motor Company we offer a range of control unit repairs, replacements and upgrades. 

BMW E46 M3 DME Upgrades.

BMW E46 M3 and E39 M5 EWS Removal.

BMW FRM3 Footwell Module Repair.

BMW DME ECU ISN Cloning Service.

BMW DDE ECU ISN Cloning Service.

We offer a very comprehensive list of other head unit services that may not be online, if what you are looking for is not listed, please contact one of our team on 0118 958 3481 who will be happy to help.