I have started to try and solve my split BLM problems again and after talking with Bryan Herter I have started to ask myself if the Scanmaster shows left bank as facing the motor or sitting in the drivers seat?? Reason is that I have high BLMs on the bank that I know has no exhaust leaks instead of the other side which I am pretty sure seeps a little from bad engineering. Bryan said not all scanners are created equal so some read left bank as driver side while others read it as pass side.... I always believed it was dependent on sitting in the drivers seat so left is drivers side.

 

Left = Bank 1 = Driver's side = cyls #1-3-5-7

http://members.aol.com/InjuneerZZ/ScanMast.htm