Since the crossfire engine is basically a Benz 3.2 liter engine, they will use the same Mass Airflow Sensor (MAS).

My experience with K&N in my C36 AMG, is that it breaks my MAS due to excessive oil in the filter when you purchase it.

In brief, the way the MAS works is that it has a needle that they put certain amount of electricity to heat it up to certain temperature. The amount of electricity will fluctuate due to the volume-changes of the air going into the intake.
When the oil from the filter sticks on the MAS needle, the heat tends on the needle to get isolated. So when you have more air coming in, it does not change the temperature of the needle. The ECU will raise a code.

So my recommendation would be either keep the paper filter (no oil) or use K&N, but try to reduce the oil on the filter.