Review on 🚘 K&N Cold Air Intake Kit: Boost Horsepower for 1999-2004 TOYOTA (Tacoma, 4 Runner) - 77-9015KP by Jared Tovar

the application was for a 99 Toyota Tacoma V6; The mileage hasn't changed one bit (it's held steady at 19.7mpg - combined city/highway - since new, pre-135k with or without the K&N). The biggest disappointment was the supposed "10% increase in performance". Unlike mileage, I have no way of measuring the horsepower gain other than to say that it feels completely different than it used to. The only difference from my truck is the sound of the air intake. I guess that's all I bought for $321. I'm afraid I've wasted my money, but as the saying goes, "live and learn".