My question relates to torque and HP measurements for the Koehler 28HP EFI and the Kawasaki 25HP engines. Are the horsepower measurements taken the same? I was told that Koehel bases its ratings on piston size an displacement where Kawasaki takes its measurements based on power coming out of the crank. Wouldn't this be the true measurement? I was also told there was little power difference between both engines. The EFi was better on gas. Anyone elaborate?