Change to AEM NOW!
Don't know how many hp I gained but its very noticeable. My 2011 Corvette Grand Sport loves it. Replacement was easy and took about 20 minutes and just used a screwdriver. My vette runs easier and peppier under normal driving and when you press the accelerator it really responds. I did not realize how important air is. Too early to tell if the gas mileage improves but I am sure it won't until my foot gives it a rest.
AEM DryFlow filter for stock air box
I bought the AEM filter to replace the K&N filter that needs oiling. The filter arrived from the west coast to Florida in about 4 days. After installation, I can tell no difference in performance compared to the oiled filter. The best part is, when dirty, all you have to do is clean it, let it dry, and reinstall it. No messy oil to deal with, and no worries about over oiling it. I like it a lot.