Kid -

I love this type comment..!? How do you "know" that a non-OEM filter provides no changes in pressure from using an OEM filter ? You've installed a pressure gauge on your bike ? I think they should have them myself.

I don't know, does the Touno have an oil pressure gauge ? Do you actually "know" that there's been no changes ? Do you "know" that the oil pressure is the same as with...say the K&N ?

Yes, on the surface, the HiFlow "appears" the same as the Buell, OEM filter, or the maybe Aprilia in this case (I don't know what an Aprilia OEM filter looks like or who may have manufactured them), but since few, if any modern bikes have oil pressure gauges...I doubt that you "really" know.

Mike