Torrie's the man!
Ive been on the fence on the corn. I see you're in RR. Where do you get your e85? Are there multiple places near you? Could only find 2 places in Austin.If you haven't already, get his e30 tune. No joke!
Seems like Valero is the place for e85 around here. Also after looking at your link, the places displayed are "alternate fuel locations" most are just electric car hookups. The e85 seems scarce! Do you only run the e30 tune when you want or do you run it all the time ?Valero station on corner of 3406 and aw grimes, east of 35.
I thought there were only 2 as well. Turns out many more. Check out website: Alternative Fuels Data Center: Alternative Fueling Station Locator
Also keep in mind the e85 is 70% ethanol. 93 oct is about 10%. Use this website for fuel calculations. Around 3.3 gallons e85 for our cars per full tank.