I don't have a power commander but, if you are looking to cure your V11 running woes, on the V11 forum a member (meinolf) has made a great map that will make a v11 run perfectly. He shares it freely. You need cables and the Guzzidiag reader and writer programs to load it to your ECU. A set of cables runs about $30 or so.
A power commander is a half baked fix.