oh, the injectors i would not worry about......there are plenty of injectors on them replaced and you WANT the updated ones anyway.....and the turbo, they are probably replacing the VGT selenoid that operates your variable vaines....also something that ive seen before, usually only on "babied" trucks though......you gotta open it up sometimes and put it to the floor...thats how they want to be driven......just not "too open" if its chipped......