Whoa,whoa, whoa... You post a lot and I respect your posts, and you're right, the explorer doesn't use a MAF sensor, but you have to remember that not all hot-wire style MAF sensors are created equal. Earlier models did not have the "burn off" shutdown feature that later models had which did cause a lot of MAF failures. And even those that did weren't always successful. Sure, some people over oiled those filters but to say it was "user error" ....end of discussion isn't right. As an engineer, would I use an oiled filter on a direct injected engine? No, but if someone shows me some "after filter" pressure differences that shows that some particular oiled filter is far, far superior to a dry filter, maybe. For a stock vehicle, it's not going to make any appreciable difference. In a highly modified vehicle, maybe a few HP. But that's why in a modified vehicle you're going to look to maximize surface area with an aftermarket intake.