The turbo isn't building expected boost — extremely common on UK diesels (1.6 HDi, 1.6 TDI, 2.0 CRDi, 2.0 TDCi).
Bob's Mechanical Repairs — independent family-run garage in Birnam, Dunkeld, Perthshire. Call 01350 727 276 or email bob@bobsmechanicalrepairs.co.uk.