What is the difference between HP, BHP, and WHP?
The power an engine produces directly at the crankshaft is refered to horsepower (HP) or break horsepower (BHP). The power that actually gets to the ground is refered to wheel horsepower (WHP). In a front wheel drive car, generally there is a 15% power loss through the drivetrain (meaning that when you buy a car from the dealership it says 138hp or 138bhp, but if you were to actually dyno the car which measures it at the wheels, you will get something more along the lines of 120whp (which is a 15% decrease in power). Most all-wheel drive cars experience even worse, as its closer to 20-25% power loss through the drivetrain down to the tires. It goes the same both ways though, if your car dynos at 240whp, that will be the same as the engine producing 276hp at the crankshaft.
