As said above Stu is your man at MSD. The important stuff on the chip will the work of Stu and the team, the installation however will be down to the technician installing it. Im not sure how BMW are reflashed or even if they have to use a piggy back, but your best plan of action is to give MSD a ring and ask them about the installer in question as they may have to meet certain criteria to become an evo chip installer etc.

Hope this helps