could anyone help me please my seat leon fr 2.0 diesel has white smoke coming out of the exhaust only on full acceleration if i go quarter there's still smoke but hardly anything there's no sign of head gasket failure all liquid levels are where there suppose to be i do have a broken exhaust centre pipe iv had carbon clean that reduced the smoke but didn't get rid of it i also have no boost and when i had the car scanned i have a couple code most relating to it been 57 plate but 2 codes that do stand out is are particulate trap bank 1 and turbocharger boost control position sensor circuit (my mechanic said that could be the actuator) but on phone to a company about getting my turbo rebuilt said its very very rare actuators go (his words was hes been rebuilding turbos for 20+ years and never came across a faulty actuator) so could anyone shine a light for me i have already done oil/filter change thanks in advance