Does anyone have any experience with stage 4 injectors? I was thinking about putting some on my 03 Ram. I have the Cummins HO with exhaust, cold air, a 100HP module, and the Banks High-Ram Intake. Someone told me the injectors were a waste and that I should go with the Big-Head wastegate instead. I have almost 500 ponies in this thing. Also, at what point do I start doing trans. mods? Please help. Thanks,

Chris