[NOVA Tundra Owner]

You should really consider how you use your truck before using any of these products. K&N Filters flow more air than a typical stock filter because they filter out fewer particles. This is Ok for a racing application where the duration of use is somewhat limited. If you use your truck off-road in dusty conditions I would not use any of these products. You are putting more dirt in your engine versus stock.

Toyota spends billions of dollars each year on engine research. Far more then K&N and others combined. If these products were better for most owners, Toyota would be using them.