Hi,
By Passing the EWS is not some big secret.
Just one of many examples.
http://m3forum.net/m3forum/showthread.php?t=52403
Writing the CSL software on to the S54 ECU can
be undertaken but add up all the costs and what
you do when it goes wrong or corrupts.
As I said if you have the oppurtunity to purchase
a CSL thief Kit, then its a no brainer.
Regards,
The Gorilla.