Seems like outdoor starting point is 6 and indoor starting point is 8. Edit: low traction 6, high traction 8. Your driving style will influence how you set it up as well.
Go to the rcshox thread in this site, there are kind of instructions on the 1st and read the last couple pages and that should fill in the blanks.
http://www.rctech.net/forum/electric...-services.html