Hi there
The only thing I know of is the swirlflaps in the inlet manifold.
If it's an early model there could be issues with this. I know a lot of ppl here i Europe that has got them removed.
The problem is that they can come off and be sucked into the engine with an engine replacement to follow....
Otherwise it's a great car. I love mine!!!!
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Brgds
Allan
‘15 F36 435xd Gran Coupé
Ex: E46 330d, E91 330dA
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