[Kamran]

Or not use an oiled filter ... And why would you, when you have so many other options? Why risk doing the damage when you don't have to...?

For a stock car, do you seriously think when Toyota could benefit from the marketing aspects of advertising more Hp for the car, with a $20 part (mfr cost, or maybe less), that they would try to save the extra $5 and forego the Hp gain, when they can obviously could use it for marketing purposes. Especially if its as easy as implied!

Now if you are turbo'ing or SC'ing and you need more air, then That's a different story.

True, for $50, I don't expect anything, but then if I don't expect anything why would I do it??