Peter it is awesome! Even doing hop laps at the track the car never slowed down.
There's a station less than 3 miles from my house (by JFK), so it works out to be very convenient for me. There are stations scattered all over Long Island and Queens, which is where I am driving 95% of the time. If I do decide to go on a long out-of-state road trip, I am running one of the Proflex Commander flex-fuel systems by advanced fuel dynamics, so I can just pump in 93 and their system will compensate for the fueling.
I'll have a separate 93 tune as well, just because timing in the E85 tune will definitely be too aggressive for the pump gas, and I don't trust myself to not go WOT at least a few times per drive lol.
Are you running a standalone ecu? Many support a flex-fuel sensor and can do all of this and so much more. E85 really is a godsend for boosted cars!
Very cool. Yes, my Motec supports a flex-fuel sensor, and I would have to use that, just in case. I'm sold. Great to hear your first-hand experience.