Just and FYI, I took my (panel stock style) K&N air filter out after discovering rather large (sand like) particles were making their way through the filter.Some of them were collecting in what I would describe as traps in the lower part of my air intake. I switched back to stock, as the only thing that seemed to pass through it, was more like powder size. I don't want sand in my engine. Does anyone have any response, or has anyone had any similar experiences? Do you have any better filtration methods that still yield higher air flow?