hi guys im havin aproblem with my wifes touran its a 2.0 tdi dsg on a 55 plate with 129000 on clock with full vw service history theres the symptoms

only when i pull away feels under powered for few seconds if i hold accelerator in that position or apply more power smokes like a b**** large black clouds of smoke but if i just flick my foot or quickly pump accelerater pedle it stops smoking and full power it does not produce clouds of black smoke after this or when i floor car only when initial pull away in first gear ive fitted new egr new filters air fuel oil ect had recon turbo fitted car drives lovelly apart from this first pull away but as i said if i flick pedel or pump as i pull away it dosnt smoke at at my brain is pickled pls help