The tuning box is going straight back now anyway. Any ideas on if the boost fault is related to the dpf? Iíll have to get the glow plugs swapped out this week and take i5 from there
must look at the inlet and turbo and combustion chambers and dpf and exhaust as a system that needs each other to get a long one fails the other suffer, so a blocked dpf filter will depending on how blocked it is causes a number of fault codes depending on what stage its at,
looking between the lines with yours its had 2 glow plugs not working prob for a while and because of this the car would be prevented from doing its own regen of dpf filter so by adding a smoke/soot box its pushed it over the edge and now the pressure on the dpf in front of it and behind it do not match up hence dpf fault code, so while the system is blocked it will effect turbo pressure and map sensor will pick it up.
so you will need to find the glow plug problems chance are its the glow plugs them selves
(good tip get engine hot before even trying to remove them as if try when cold the tend to snap off and believe me thats a very big place of pain)
once these glow plugs are done then you have a chance of forcing a regen on the dpf filter,, but this said if done over 75k its due a new dpf filter anyway. some people send dpf filters to a company on ebay who clean them correctly cheaper than a new one in some cases,, as if dont clear this filter correctly the faults will keep coming, the turbo will over heat and the extra diesel and soot in the engine oil will kill off the timing chain, £2000 job if dont snap it £4000plus if does, on the bmw own n47 drived engines used after march 2010
a good diagnostics that will regen and work dealer level with dpf is autocom cdp plus link below https://www.ebay.co.uk/itm/Bluetooth...q1O:rk:11:pf:0