The truck mainly in the higher level tunes when you give it full throttle the rail pressure goes to 19kpsi and Rpms are 2200. The pressure well drop off to 8kpsi the will act like its missing but if you keep in it smokes black the whole time. I'm really starting to think it's my tuner because I've done everything I can think or have heard for this problem. So if anybody can give me some ideas that would be awesome.
The mods are
•edge juice with attitude race
•fully deleted
•70 hp injector nozzles
•head fire ringed and studded
•air dog 150 with brand new filters
•rail pressure relief plug
•industrial injection bag-o-parts on the pump
•S&b cold air