Some feedback??? The last time i visited his web, they claimed 620HP for his software upgrade and now they offer the same but with 700HP!!!
http://preisliste.ac-schnitzer.de/ac...510&ID_NR=7574
It's an even higher power than they offer in the M6 grand Coupé (650HP). As an option, they offer official warranty too. I am thinking of ordering, due to the difficult to pass my car from 630HP's....
Regards!!!