Vtec92Civic

How can u go about telling what disc exactly is in your FMU? I personally don't like FMU's and have never ran one myself, but the car I purchased has a FMU and the GReddy Turbo Kit (92-95 Civics)

For now until I can get bigger injectors I am gona run it, but how can I make sure I got the 12:1 disc in the FMU?

Thanks