I ran a base line engine on the computer ajusting head flow and piston friction numbers from the programs questions about the short block bearing size and other info about the fuel ratio, rpm range ect. until I was happy with the numbers the dyno put out for a stock engine. then changed one thing at a time to see the improvement in performance the dyno seems to be verry generous because there is no mechanical injection option to use on the program. the trends in the info is what is most important. this program shows changes in dynamic compression, boost compression, effective stroke, cylinder pressure, exhaust temp at the valve, vollumetric efficiency, machanical efficiency and many more bits of info. I am better with a stearing wheel than a keyboard so it will take some time to work through this info and make graphs to show the data.