Whomever said that they can make a "FLEX FUEL" file without an alcohol sensor is full of shit. Furthermore, those 0280156065 injectors are hardly big enough for the stock turbo on pump fuel lol. Full e85 takes about 40% more fuel volume to make lambda of 1. I have custom code for alcohol sensor without any additional hardware and its not cheap but I will make it available for purchase. I can patch just about any vag me7 ecus and have a few done for me7.5 /me7.1.1.
Just to make a point, some brazilian flex cars are E25 to E100 and don´t have sensor, they are only based on lambda probe readings... but for sure it´s another thing discussed here.