Ive been trying to do research on b8 a4 flex fuel. I would like to go e85 and i know the car is capable of handling e85 but I?m trying to figure out if i just need to touch the secondary fuels table i.e (e85 tables) and thats all like how does the car know the ethanol content and how much in it. Just need a couple answers.
Also I'm coming from tuning mustangs ik theres a option to turn off o2 sensors over there been looking for an option to turn off the one for the cat to replace it with one for a gauge.