Just wanna get a idea of what filters everyone is using.
Also, what kind of numbers you are laying down with that filter.


The reason for this thread:
i bought an apexi filter, pushing 292 whp, i slap on apexi filter, feel tremendous loss in power.

maybe switching to a bigger k&n will not be as restrictive. im not sure. but running no filter at all on my setup(which is how we tuned it)felt so much better and powerful.