your TPS voltage is at 10.45 volts? Also what I have learned alot on by searching TT.net is that these 550cc injectors suck. I was told by Mr. Greg himself, "these injectors are drilled from a smaller size and in my experience do not flow like a manufactured injector and I recommend highly against them. When we have gone to custom tune them the maps are crazy to make the air fuel even close and some are not tunable at all. The biggest issue is, you might get the overall ratio correct, but some could be rich and others lean."