It might be a 2D25 (mass air manipulation cover, maximum air) or something like that. If you dont want to decrease your E85 mix, just go to the user adjustment table, set futureuserA= 2, then change fuel open loop mapping to 75 or set it to 5 more than you have it set to. I had this exact same issue and it gets really annoying. But make sure you set your overboost to 18.0 as well because with the E85, you will hit that much boost, well depending on your mods
A/W E92 335i M-sport with JB4 G5 ISO/ E40 WEDGE PERFORMANCE BACKEND FLASH, Alpina TCU flash for AT/Switch-tronic +AR Downpipes, Stett gen 1 intake, Wagner-Tuning FMIC+RB Turbo setup/ RB PCV Valve+ Akro exhaust+60% E85/93 mix,+ HRE P40S wheels, KW coilovers, M3 sways,+BMW performance CF Mirrors, BMW Performance CF deck lid spoiler,+ CF interior trim, p3 vent boost gauge,+ LUX angel eyes (11.73@119mph on street tires) NO METH!