Review on K&N Engine Air Filter: Premium Performance Replacement (Land Cruiser, Tundra, Sequoia, LX 570) by Andre Arias

To be honest I haven't driven my Toyota Tundra since the filter was installed. I think K&N is a very good filter. It's my personal opinion. The problem is that most don't have the patience to let the excess charge wear off when it comes time to clean and charge. Overcharging can affect the mass air flow sensor and cause an indicator light to illuminate on the dashboard. In my opinion, after charging, the filter should be turned upside down. This causes extra charge to drip off the top of the filter. I'm not sure how long the cooldown should be.