Ok, I bought desktop dyno...tracked down all the specs for an LQ4 6.0 liter I could find, but have a problem. I dont know what to put in for the Whipple. First off,they dont show a twinscrew charger so i have to use a roots style to go with. I put in 1000 cfm for the whipple..not sure if thats right or not, it wants to know belt gear ratio??? I have no idea what to put and it changes the simulated dyno 100-200 hp when you change it. Anyone with desktop dyno know what i should put?? 1, 2, 3??or more for the belt gear ratio?? Or is there just no way to set it up with a whipple???