You don't say what engine you have. Regardless, don't go K&N.
GDE Tuning said, "We do not recommend K&N style filtration on a turbocharged engine.
The hi-flow filters do have less pressure drop, but they let larger particles through the media.
These particles can reduce turbo compressor life over time.
Naturally aspirated engines can eat the larger particles without major issues.
The stock airbox is more than adequate for the Ecodiesel."
