No matter what year or series (Petrol or Diesel) Hiclone + K&N Air Filters will give you more power and better fuel economy or your money back.
Hiclone has a series of fins, as the air is being sucked or forced through the fins it make the air spin, the device doesn't move, it makes the air move, by spinning the air it creates a vortex that want to and does suck more air, and it will also bring your turbo on any where up to 600 RPM earlier. More air will give you more power/torque from the fuel.