I have yet to find anyone that has confirmed that the flex parameters actually enable flex fuel operation. So far I have confirmed that people can shut it off, but I know of no one that has turned it on when it was off by default. This was certainly true of HP Tuners. Their flex fuel stuff didn't work for turning the function on. EFILive appears to have discovered more of the parameters, however. I am very interested in the answer and might just go ahead and burn up another license to find out.

I am in the process of installing our dyno at work. I expect it to be up and running next week. I expect to be able to derive some really good tables for both E-85, E-100 and M-100. I will make them available when I finish. Unfortunately, all of these engines are 4 cylinder for now. I will move to a v8 next (L92). Probably a v6 after that.