I have been running e85 for around two months now. Its amazing if your boosted. I am running a 3.2 on headers and an intake and HPTuned with 0 KR. You need bigger injectors.. some say #42, but if you plan on doing anything other than just e85 like smaller pulleys, I would recommend #60 or #80. You will also need a tune, now this is the hard part. You can get a dyno tune from a local shop but in the winter it might run really rich or lean depending on the tune. Thats why I bought HP tuners and taught my self to tune so when ever the time comes I can change it. Find my e85 opinion thread, lots of info there.