if the fuel system is setup for alcohol it is a decent fuel. It is quite corrosive. But it burns cooler than gasoline so you can run more boost. But it has fewer btu of energy so you need more of it than gasoline. Hense the need for a larger pump, this in turn requires the larger feed and so the pressure can be controlled by the pressure regulator so a larger return is also needed. This can all be added and the stock stuff left there so the car can be returned to stock in the future if that need arises. Then there is the larger injectors. And a need to control them . You can see how this spirals out of control.
what is in it that eats up the rubber parts in older carbs on outdoor power equipment? I was under the impression it was the alcohol and its properties in the gas mix.Im no expert but the fuel itself is not really corrosive. the problem is it absorbs moisture which will cause corrosion. you usually wont have any issues as long go through the fuel often. Just dont let it sit for long periods of time.