Thanks!!!! On your first screen display you get when you start your car.... The O2 volts are on the left. Usually running 750-850v.,,, then on the right you see 0.0. As you get knock, these numbers will increase. This is the amount of retard your ECM is adjusting to help you from blowing head gasket or melting piston. But usually it is to late at this point. Your boost registers as Bst..... It usually reads negative until you start making boost then it goes positive per the # of boost you make.
Do you have the scanmaster manual? If not, go to FULL Throttles forum page and down load it. Will be helpful.
I suggest that you but a knock detector from Caspers. This will help you and save your motor!!!
Clint