Idle problems.. Needs help

[XxBIGxTEXxX]

Ok im back with problems on the Hoe.. So i had already posted once before about service check engine light and checked them which came up as code P0102 and P0340.. When i would turn the truck on and would give it some gas, it would start idling as if it would stall on me and then it would start running and when i would be around 45-70mph, it would give me a slight jerking as if the injectors where not spitting fuel at the same time.. So yesterday i switched out the MAF and the Cam shaft position Sensor. So took it for a run and the problem wasnt fixed.. Starting to think if the problem is the MAP sensor or if the timing could be off since i put the performance clutches, the shift kit, and vette servo.. I dont want to put more money into the truck for another 2 months... Any ideas on what the problem could be? Help please..

 

[XxBIGxTEXxX]

So I decided to drive the truck for a bit and what i notice was that the problem was just when i would step on the gas peddle and gave it gas.. Thats where i notice as if it would want to die on me.. It chugles a bit when steady driving at a speed and vibrates a bit when sitting at a atop light as if it was getting accelerated on its own.. Just dont seem to know what the actual problem could be... Any suggestions anyone?