E89 Z4 35i and 35is with the N54 engine I have confirmed can run E60-E65 fuel on the stock fueling system. No fueling upgrades needed
http://datazap.me/u/buraq/e60-fuel-t...lo=10&mark=102
Our project Z4 went FBO+ yesterday and I was out beating it up pretty hard today. It was time to see if the fueling system would support E60 and sure enough it does
I spend pretty much all day in the 95°f tweaking the fueling system. No long cranks, and smooth idling.
Haven't started dialing in boost controls yet, only fueling and a base timing for starters