I just wanted to post that the convertor box bought from David Blume's outfit works fine. I had some problems with them sending the wrong connectors and their customer service left a lot to be desired, but in the end the car runs great on E85. Before the conversion, I couldn't run anything over E20 without the engine wanting to stall and running erratically.
Could anyone explain how this box works? If I understand correctly it doubles the pulses - two quickly in succession vs. just one originally. I couldn't get a straight answer from them and I'm curious about this.