Question: what is the difference between horsepower and ps?
Answer: The metric equivalent of a single horsepower, referred to as 1 PS, equals 4,500 kilogram-metres per minute, which rounds to 32,550 foot-pounds per minute, or 0.9863 of a horsepower. ... And that's why horsepower tends to build as the engine revs increase (up to a point), because you're pumping more fuel into the cylinders.