Flex fuel question

[cyipher]

I have a ls1b ECU with a 12587603 os, I want to add a flex fuel sensor into the mix. From what i can tell this os came with a flex fuel option, but the cars on cos3 is there an issue with this? will the ecu still compensate for the sensor if long and short terms are disabled? What tables are used when the flex fuel sensor see ethanol as far as modifying stoich and timing?

thanks
Kyle