The advantage to the K&N for engine air intake is more the much longer service interval and that they will probably last the life of the vehicle than for a performance increase. As for the CVT application. We've already had an owner who's transmission ran too hot because the air filter got clogged and was not flowing enough air to properly cool the components. Because a K&N is so much more clog resistant than the OEM paper filter, this could be a real advantage.
Ron, do you know anyone who has had their oil sent in and analyzed after using an OEM air filter for 9k miles and then once again after installing and using a K&N air filter for 9k miles?