Well at the moment I havent a clue why its behaving the way it is

a friend of mine at R Tech explained that the EGR should not really cause any powerloss etc as already mentioned on here.Im taking the car into a garage I use tomorrow afternoon he is going to have a look at the car for me as I just havent a clue with anything to do with turbos and boost etc.The car is still driving fine as im still using it for work etc always the way with me I have unusal faults

thanks again for all replys etc and if anyone else has any feedback what it could be post away as ill be passing it all on to the chap tomorrow thanks.