These new injectors are designed for the engines combustion chamber. They have a higher flow rate and can atomize the fuel more efficiently than the stock equipped injector nozzles. This exact calibrated increase in fuel results in +30-40 hp more and +100-130 lbs of torque, included with the kit is a metered orifice that increases your turbo boost for the exact air fuel ratio. A fairly easy at home installation that results in calibrated power increases that won’t exceed the power train design.