Hi everyone, I've not long brought myself a focus titanium 2.0l tdci. I had the engine management light come up with codes of p0490 and p2263 so I took it to the garage and the glow plugs needed doing aswell and I was told to change the boost pressure sensor/ map sensor which I have done and this should cancel the codes down which it hasn't done. The problems I have had with the car is not starting straight away and white smoke kicking out also sometimes when first started it won't rev above 1000 rpm even with my foot to the floor. If anyone could help I would really appreciate it.