Review on Enhance Your 2003-2004 TOYOTA 4 Runner's Performance with K&N Cold Air Intake Kit: Increase Horsepower with 63-9022 Compatibility! by Rashan Jimenez

available Again, K&N and Revain helped me. The order was dispatched immediately and arrived safely. The K&N air intake system is a professional product that is easy to install and delivers more power (approx. 14 hp more) and fuel efficiency (from 17.2 to 18.8 mpg). The only downside is that it increases engine noise under hard acceleration, but that's to be expected with the increase in throttle response that the K&N induction system offers. Thanks again for the good work.