If you're on stock fueling and dme management (with regards to E85), your car is going to be an unhappy camper with 100% e85 on a cold start. I can't say i've ever tried anywhere near that aggressive a mixture, but I don't think there's anything abnormal about your experience...call me crazy, but don't you have flexfuel lines? I seem to remember a thread or post from you about them. Could just be the food coma i'm in from xmas eve dinner lol.
E88 N54 Alpinweiss/Coral Red/Motiv HTA 3586r Tial .82AR/Motiv Port Fuel/Meisterschaft Race/Berk Resonated/ER CP/Synapse/VRSF FMIC/Rob Beck PCV Valve + Cap/ST Coilovers/M3 FCA + Tension Rods/M3 Subframe Bushings/M3 FSB/AA Strutbrace/DINAN Camber Plates/Apex ARC-8/Project Kics/VAC Hubs/Rogue Transmission Mounts/Alpina TCU Flash/Icarbon/Kerscher/BMW Performance