Original sentence: The overall additional 250 hp required 150 hp to make, with the accompanying increase in fuel burn.Yet the benefits outweigh the costs, for that 150 hp (110 kW), the engine is delivering 1,000 hp (750 kW) when it would otherwise deliver 750 hp (560 kW), a gain of 250 hp and a net gain of 100 hp
Edited sentence: The overall additional 400hp required 150 hp to make, with the accompanying increase in fuel burn.Yet the benefits outweigh the costs, for that 150 hp (110 kW), the engine is delivering 1,000 hp (750 kW) when it would otherwise deliver 750 hp (560 kW), a net gain of 250 hp