Car is still running fine, I'm actually pretty pleased with my E85 mileage thus far, trying to decide how often I should run a tank of pump through it, I'm thinking every 3-5 tanks of E85. Other than that, nothing new on that side.
I will, however, be taking the car to the dealer tomorrow afternoon, my factory nav touchscreen has stopped working, it lets me touch objects but doesn't select them. Hopefully it's something they can fix but I have a feeling they'll be ordering me a new unit all together. We'll see, hopefully they'll still be cool with my car but they haven't seen it since I got tuned. Can't imagine how they could deny a warranty claim on the navi unit due to my mods though so I should be good to go.