Good day folks

Got a 2005 E320 CDI 118k miles. It just seem sluggish and underpowered. Seems to be lacking the torque it should have.

This is my first CDI car in family. I have not driven any other CDI I6 to compare.

So its got new fuel and air filters, Clean EGR system and no check engine lights. New air intake temp sensor and new MAP sensor.

I still think the damn thing does not have the grunt it should provide. I had car scanned on MB star program and no faults found.

Would a clogged air intake make such a great difference. Would there not be some sort of fault code for it?

What about the injectors? Car starts up great and has no smoke under heavy acceleration.

Fuel milage in town is ok, not great 13l to 100km..

Thanks