OK, I think I'm on a roll. I've not tried the pass through system yet but I've figured out how to get the balance rates on to the V8 scan and tune screen on the lap top. I loaded the PIDs into the FSV2 then warned up the truck and did a BBL in recording mode. I logged 5 minutes at normal running temp and idle speed. I then went inside and removed the SD card from the FSV2 and loaded up on my lap top. I double clicked the automatically save log file on the SD card and then the V8 scan and tune app opened I chose the data window and the file had to be configured, took a minute or so but it came up as a chart that showed the average balance rate and the high and low rate for all 8 cylinders. If I could figure out how to attach a pic I would. Any suggestions? It's getting late now and I'm hesitating to add more. I realize this a fairly old thread so if anyone is that interested I'd be glad to add more detail.