The more you tune it for the flex fuel, the more difficult it will be to swap back to gasoline. I'd leave the tune alone and by a couple of smaller pulleys. Or figure out a way to change timing without a tuner (happy knob).
It is in Norwalk Ohio but usually there is a caravan of us that kind of congregate in Chicago and caravan from there. The event allows anything 3800 powered and other buick powered machines. should look into coming its a blast
Not sure if E85 costs pennies in Iowa but here in IL with current gas prices E85 isn't going to save you any money when you are getting ~30% worse MPG.
I've seen it $1.25 cheaper a gallon. The last time I checked at a station, 91 was $2.77 and e85 was $1.52. Granted this was around 2 weeks ago, thats what I was basing my calculations off of.