a/f and alcohol injection

[supercatxr7]

What does alcohol injection do to the air/fuel ratio? Right now I'm at 12.5 on my XR7 without alcohol. What is it going to show on the dyno once I start spraying the alcohol into the intake plenum? Is the car going to become much richer if I leave the timing and boost the same?

 

[AnArKey]

Yes it will richen up. Based on mass vs gasoline, methanol will richen it up 43% as much, and ethanol (denatured) 61% as much. So adding .25GPM methanol, will richen things up as much as .43*.25=.1075GPM of gasoline would.