S5, Sport On, DSC M-track
Join Date: Jun 2008
Location: Auckland, New Zealand
Posts: 1,434
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Technically speaking you can 'download' the BMW factory tool and then install it into any laptop running a 32 bit windows system and then just buy an OBDII USB cable and do a bit of modification and it'll work just like the real thing. But to do this you'd need a bit of knowledge with computers.
Alternatively, search on ebay UK for BMW GT1 (on any laptop) plenty of guys out there selling this kit.
Or quicker still, find BMW INPA EDIABAS (version 4.4.7 will do for M3 CSLs - you don't need 5.0.2) online and buy a 10Euro cable from ebay ... much easier to use than the GT1 and lot quicker too in clearing codes and reading fault memories.
The diagnostic section on bimmerforums.com is a good place to start learning.
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