hello all, after fitting a new turbo to my focus tdci , it doesent seem to want to run right, at first i thought it wasent boosting but now i think the trouble could be somewere else, the car is very flat and the turbo actuater is moving up and down , ive just been to a friend who is a diesel specialist and he took it out, firstly when he put his foot down it seemed to pink? then clear abit as he held it in 3rd, he thought it could be a faulty injector or maybe the mass senser? he put some additive in the tank and told me to take it for a blast, but doesent seem any better, i dont like the pinking noise but my mate says it could be a injector pushing to much diesel in , the thing is it starts and ticks perfect and drives ok just flat with a pinking sound if you realy hammer it, im well pissed off,