If anybody can help a gearhead who actually knows very little about gears, I got somethin' bugging me. Just saw a car commercial that trumped a turbo charger as adding torque (It was an MB diesel). Question from the less than mechanically competent: Doesn't a turbo, whether bike or car, only kick in at high rpm? And if so, isn't that the definition of bhp? I concede I may be completely wrong here but I've never heard of anybody adding a turbo to any engine to increase TORQUE. Wish I knew a good engineer...