Bore size should not effect the map... compression will, but I believe if you did a 9.2:1 727 it would use the same map as a 686.
SD, I'm confused. A larger bore will require a larger total volume of fuel/air mixture to run correctly. The larger piston will be drawing a larger volume of air into the cylinder and so the FI map will need adjustment to meet the ~12.7 to 1 A/F ratio. I would think a SB map would be very lean??
And I also thought that compression should do very little to map requirements, since the A/F requirements would not increase or decrease?
Aaron