Another problem with advertising peak HP or torque numbers is that the manufacturers enter into a numbers competition that may be hurting the actual efficiency of the engine. What I am getting at is that it is possible that in order for say Ford to boast 800 lb ft of torque the engine was tuned to inject fuel late into the power cycle which may be significantly hurting the trucks fuel economy while towing heavy. If the consumer knew that in order to get that extra 50 lb ft of torque he needed to give up 10% on his fuel economy would he want it? (When the after market tuners add torque they inject the fuel early and use higher pressure, they are not having to be concerned with emissions and can sometimes boost both torque and fuel economy with the same tune)