I've had this filter bolted on for a few weeks.
Was concerned that the filter would make too intake noise, but it is really very subtle. Just a little more sonorous on full throttle. There also a slight whistle from the turbo.
Engine response is a little crisper, easier to blip the throttle on down-shifts.
My SAE approved butt dyno wouldn't argue too much with the claimed 10 hp power boost.
Please note the filter ships dry, so recommend having some filter oil on hand before it arrives. The K&N squeeze bottle is easier to apply to filter than the spray bottle.
Overall a quality piece.