Quote:
Originally Posted by sokoloff
As much a K&N would give you and you'll get better filtering. Mercedes diesels get more air than they can use as it is. Adding a K&N will do nothing.
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It will. It will give you an education on how to rebuild your engine when the dust from the K&N wears it out.
A friend is an original owner of a 190D 2.5T, and it will do almost 40 MPG if you can keep the speed reasonable.