| Some thoughts from a fuel engineer......
Street driving is no different than racing. High boost is high boost. And you only need alcohol injection at high boost.
If you inject pre-carb, then the alcohol has to go thru the venturi and will be vaporized like the gasoline. Just don't let it puddle under the carb by turning off the plenum heat or spray way too much. It's the water droplets that can erode the impeller.
I worry the spraying after the turbo will result in uneven distribution to the cylinders.
Methanol is much more corrosive that ethanol.
Now that 10% ethanol is prevalent in Florida, you will begin to see E85 pumps and have a cheap source of ethanol.
One of the big advantages to water or alcohol inejction is the absroption of heat when the going from liquid to vapor. Starting with a vapor would take away this benefit. (The vapor will still supress knock, just not nearly as effectively). |