Quote:
Originally Posted by napphappy
I have had both. It seems to idle better(maybe not highest HP, I dont know) with the Air box. But cooler air is almost always better.
You could put the cone in the inner fender(cool air) and see how it runs.
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Actually, if you take a read in MRT's book called WRX training, they discuss this and do the math with temps and airflow, etc. What the math says is that the increase in airflow far outweighs the impact of the temperature, and that an open K&N filter on an early WRX is going to make more power...