The official hp rating for the Focus MKIII is 160 hp at the crank. With mods to the car some are getting as high as 170 hp to the wheel. My question is how much loss is there between the crank and the power at the wheel. I've heard different percentages, but would like to have a good guess-tament. If the loss is 10% then would 170 hp at the wheels equal something like 187 at the crank?