Dont know for sure hp #'s but with finally having a good set of injector bodies my truck held perfect rail pressure this last weekend and was commanding a equivilant of 5k pulse width if a guy had stock injectors , I am hopibng to be able to try out a stroker pump sometime if i ever get the money , Just stick it in as the 2nd cp3 I know Max'd Out has done around 1200 hp with stock pumps and lots of air .