Right now I have an S4 HBP with 9.4 rotors. I am running a Haltech E6X, MSD 6T, Racing pulleys, walbro fuel pump, Koyo Rad, HKS stage 3 clutch & light flywheel, full 3 inch exhaust from HKS just to name a few. I have stock S5 manifolds, stock S5 injectors and stock S5 turbo. I wanna upgrade my secondary injectors to 1000cc low impedence. But I wanna know if I will be running rich all the time or is there a way to alternate the flow on the injectors. What I mean by alternating the flow, is there a way to make these injectors run as if they were example 800cc or are all injectors fixed ?

 

You have a Haltech. You can run any injectors you want as long as you tune it properly.