It's a 93 tune, not an ethanol tune. There are ways to address it but your tuner needs to retune the car. Or just run a little less E.
Fair enough. I’m used to splashing a hint of E for knock reduction on unitronic. Without it I’d see upwards of -4.5 degrees knock along with some others on the forum. I’ll try to log straight 93 after emptying this tank and keep an eye on it. Don’t want that becoming an issue once the E30 tune comes out for the 2019 vehicles.