K&N Air filter questions

[RedRide]

I have be using K&N air filters for years with absoluly no problems.
One benifit of a K&N is they tend to "open up" the top end a bit.
Making an engine breathe easier can only be a good thing.

Cleaning and re-oiling could not be simpler, just about idiot proof but, evidently some do manage to screw it up.

.......if you could improve MPG by dropping in a different filter, Toyota would have done it already..........

Well, actually, Toyota does sell and install a "K&N type filter. Toyota calls it a "high performance" TRD filter and it is made exactly like a K&N for a ridiculous price.