Thanks Jim!
My thoughts: around 12.0 for best power and 11.5 for safety purposes.
I am still not sure about the Autobahn.
How about the cylinder head gaskets headstuds? 21 psi ond a stock base is pretty much, isn`t it?
I don`t want to add big crossoverd manifolds and headers to reduce boost pressure. But it seems that i have to. Otherwise i have to change to 65mm, to be much safer.
Thanks
Steven
Berlin Germany.