Review on K&N Engine Air Filter: Premium Performance Replacement (Land Cruiser, Tundra, Sequoia, LX 570) by David Shah

I have a 2012 Toyota Sequioa and it's time to change the filter. I figured why not have one like I used to have on my sports cars. So the installation was easy, but then I noticed the infamous mesh everyone is talking about on the top filter box. I've never seen this on a car and it seems to restrict airflow to the engine even more? Why was it done, mpg, EPA stuff? White knows, but I threw it in the trash. I have no whistle or almost no sound (just a little on WOT). This grille can be carefully removed with a flathead screwdriver by gently prying the plastic rivets from the top of the filter housing. Overall a good product and it fits like a glove! Driven several kilometers at different speeds and with different throttle positions. No whistling and the only sound I hear is gulping/sucking when revving the engine in a parking lot.