Originally Posted by erikson
Lower engine temp tricks the CPU (computer) in thinking that the engine is not wormed up yet. The CPU (computer) then adds more gass than usual. Making the engine run rucher. More gass means more horsepower. It's cheeper than adding larger injectors.
I hate to be the forum naysayer, but everything you said is correct except for the "more gass means more horsepower" part.
This is only true if there is more air in the cylinders.