We had the injectors done by Dynomite Diesel on our 2188. Cost was $50/injector for an 8.3 cummins, supposed to be good for 50-75hp on 30% less fuel, if its half of both of those i'll be happy. I haven't cut anything yet but hopefully tuesday i'll be able to let you know. I does idle a whole lot smoother now so i'm sure they changed something.