Nice post WANTED. You're seeing the problem at large although you didn't specificly mention it..
The stock rail is designed to run gasoline. E85 itselt isn't the "problem" I see with using the stock rail. It's more a volume/supply issue. As I just stated, the stock rail is designed to fuel the stock 2.0L engine w/ gasoline making ~290bhp in stock tune. Sure it's capable of much more and has powered many cars making well in excess of that ammount.
I ask that you take a closer look at the situation than the cold fact "X car made X whp w/ the stock rail". Take a look a the fuel thats being used to produce that power. Might take a gander and see what size injectors are being used. Maybe even dig further and look at the injector pulsewidths during those pulls. Some simple math will show you that even a "stock or stockish" turbo car running E85 is going through a striking volume of fuel. You'll start to see what Lucas, WANTED, and I are getting at.
It's always a good thing when you can do the work to solve your own problems/questions rather than rely on someone else to "prove" them for you.
