Thanks for the link. I've looked at that and several other sites and they don't answer the question I have. I'm looking for a way to quantify the difference between two boosters in the same system without buying and installing them.
For instance, as an example, an 8" single diaphragm booster with 17" of vacuum requires 75lbs pedal input to create 1000psi at the front caliper. How much pedal input would it take for an 8" dual Diaphragm booster to reach the same 1000psi with the same amount of vacuum?