Doug, a very good example of correct cone filter instalation

And another for all Mike's attempts to make sweeping statements.


Its down to the specific flow characterists of the filter and filter box in question, the nature of the sensors on the engine, the temps at the time, the boost you are running, the rpm you are at, the speed you are doing, and lots of other factors.

In most applications you will find that swapping from one type of filter to another often results in gains in some places and losses in others, but likewise in some applications its all gains or all losses.