Truck started hesitating and losing power after 2000 rpm. We put icp sensor new tempature sensor and four right side injectors also a high pressure oil rail kit . It has a brand new turbo also.i don't have any gauges other than what's on truck. I used a scanner and it says turbo under boost but it actually has a over boost.and it doesn't wanna go over 2000 rpm . Also little white smoke when I pull away from a stop . When it's cold doesn't wanna shift . When it's warm I can push pedal down and it takes about 20 seconds and takes off like it should , very powerful and my boost comes back down where it should .dont know if I should do other injectors cause it did get a little better but not much . Or if it's hpop.also this is my first post and I'm new to this thanx

 

If you look in the 6.0 section there are two million threads like what you are describing. Might want to make a pot of coffee and read up.